TYLI News & Views Summer 2021

news & views [S U M M E R 2021]

THE PROJECT NEWSLET TER OF

FEATURE STORY

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PROJECT WINS

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PROJECT MILESTONES

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CURRENT EVENTS

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IN THE NEWS

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The new West Gates at Tom Bradley International Terminal at LAX in California. (Image Courtesy of LAWA)

AVIATION is SOARING

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T.Y. Lin International’s (TYLI) worldclass Aviation sector has a long history of providing professional services for airport projects in the United States and worldwide. This includes the Aviation team’s successful relationship with Los Angeles World Airports (LAWA) and their main international hub in Southern California, Los Angeles International Airport (LAX).

regional transportation system and promote

One of TYLI’s recent LAX projects was the

team for the project, which was led by Turner/

new West Gates at Tom Bradley International

PCL Joint Venture and Corgan Associates, Inc.

Terminal (TBIT). Located just west of TBIT, the

The firm served as the primary structural design

five-level, 15-gate, 750,000-square-foot facility is

consultant and Engineer of Record for three cut-

part of LAWA’s USD 14.5 billion modernization

and-cover tunnels connecting TBIT to the West

plan to improve connections to Los Angeles’

Gates and a new north-south taxiway.

news&views — summer 2021

economic growth for the city and its environs.

The West Gates at TBIT facility functions mainly as an international departure and arrival concourse able to accommodate both wide and narrow body aircraft. What travelers experience is a modern “guest experience” in a cutting-edge environment, with all the latest digitally-based technologies and amenities at their fingertips.

TYLI was a critical member of the design-build

View of the completed Passenger Tunnel connecting TBIT to the West Gates facility.

TUNNEL DESIGN

EXCELLING AT COLLABORATION

The tunnels portion of the project included three tunnels

The location of the new tunnels in a high seismic area

connecting TBIT to the West Gates and their extensions,

constituted another major design challenge. Reflecting

including associated structures, grading, utilities, drainage,

TYLI’s spirit of collaboration, the firm’s Aviation and Bridge

and other key design aspects.

sectors joined forces on the tunnel designs. Although

The Passenger Tunnel (PAX) measures 921 feet long with typical clear dimensions of 50 feet wide by 19 feet tall. The design includes 3-foot-diameter concrete columns spaced at 20 feet along the center of the tunnel to separate arriving and departing passengers.

The other two tunnels are for baggage and utilities and include the 1,235-foot-long, 30-foot-wide West Utilidor Tunnel and the 500-foot-long, 40-foot-wide East Utilidor Tunnel (TUTL-E). The clear height for both is 14 feet. A portion of the TUTL-E uses a grid of steel columns spaced at 20 feet.

Design challenges included constructing the tunnels

bridges were not part of the project, the required large dimensions, the use of concrete columns, and the unique seismic evaluation for the tunnels matched with the Bridge sector’s expertise.

TYLI’s Bridge team took the lead here, performing soilstructure analysis to evaluate the seismic demands on the tunnels. This intensive raking analysis considered two seismic hazard levels, the 475-year return period and the 2,475-year return period. TYLI also designed the tunnels to support the immense weight of an Airbus 380-900 or its equivalent, in addition to the self-weight, backfilled soil, and taxiway slab loading.

under an active taxiway - and with no interruptions to airport operations. TYLI’s solution was a phasing plan that allowed construction to take place in two distinct stages.

The Aviation team also had to fast-track the tunnel design, which required close coordination with the contractor to meet tight schedule demands.

New PAX with 3-ft.-diameter concrete columns.

summer 2021 — news&views

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TYLI provided engineering design for the construction of a new taxiway east of the new West Gates facility.

TAXIWAY DESIGN

AWARD-WORTHY RESULTS

As a separate contract, TYLI also provided engineering

The West Gates at TBIT project demonstrates TYLI’s

design for the construction of a new north-south taxiway

ability to provide multi-disciplinary experts, experience,

west of the existing Taxiway S and east of the West Gates

and expertise on challenging projects in complex airport

facility. Since it was imperative to avoid interruption to

environments. The project also showcases the firm’s

airport services or ongoing tunnel construction, the design

ability to work closely with its design-build partners to

plan designated phased taxiway construction.

deliver difficult alternative projects successfully.

TYLI’s taxiway design included a new taxiway alignment and new concrete and asphalt pavements. Ultimately, the pavement design called for 30,556 square yards of 12-inch lean concrete base course, 19-inch-thick unreinforced Portland Cement Concrete (PCC) pavement, and the construction of 300 square yards of 19-inch-thick reinforced PCC pavement.

The Design-Build Institute of America (DBIA) recently honored the West Gates at TBIT with a 2021 National Award of Merit (Aviation category). As a National Merit Award Winner, the project now competes to be named an Excellence Winner (top project

The taxiway design also included a new service road,

in its category) and DBIA’s

new underground utilities; grading; new airfield electrical

Project of the Year. Winners will

(in-pavement taxiway edge and centerline lights), new

be announced in November

airfield pavement markings, security fencing, and new and

2021 at the annual Design-

modified storm drain systems.

Build Conference & Expo. >>>

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news&views — summer 2021

FEATURE

ARTICLE

TYLI Provides Design for Grist Mill Bridge Using New FRP Girder Technology

Image Courtesy of Wilfong Work

summer 2021 — news&views

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Aerial view of load testing for the Grist Mill Bridge. (Image Courtesy of Wilfong Work)

Located in Hampden, Maine, the original Grist Mill Bridge

TYLI, AIT Bridges, MaineDOT, and the consultant hired by the

was a buried T-beam structure built in 1924 and widened

town to design the utilities (Woodard & Curran). The utilities

in 1948 to the current alignment. When the Maine

also required careful consideration of construction phasing,

Department of Transportation (MaineDOT) was looking

as the sewer and water lines crossing the structure serve as

to rehabilitate or replace the aging bridge in 2016, TYLI’s

the critical arteries for a large segment of the town and are

Falmouth office conducted a preliminary engineering

essential for transporting sewage to the treatment facility in

analysis on the project site to determine the project scope

Bangor.

and direction. The study indicated that a replacement

The tidal influences, variable ledge, and Atlantic Salmon

bridge was the more cost-effective option.

presence were mitigated through careful construction

A major design consideration for the replacement bridge

phasing consideration and detailing, allowing the contractor

was longevity, with a target useful life in excess of 100

to quickly bring the work to an elevation above the tidal

years while minimizing required maintenance. To that

influences and out of the stream.

end, MaineDOT decided to use the project site as a trial for an experimental lightweight, durable Fiber Reinforced Polymer (FRP) girder technology developed and tested

Success through Teamwork

by AIT Bridges and the University of Maine’s Advanced

Along with providing engineering guidance throughout the

Structures & Composites Center.

project duration, TYLI coordinated its preliminary and final design efforts with the surrounding highway replacement

Overcoming Project Challenges

project, the utility upgrade designer, and the beam designer.

AIT Bridges provided the design, detailing, specifications, and

Along with the demands of designing and constructing a

fabrication for the composite girders used in the replacement

bridge using composite girders instead of precast concrete

structure.

or steel girder construction, the site also had considerable

Scope of work for TYLI’s Falmouth team included the final

challenges and constraints. These included a complex geometry, multiple utility crossings, tidal influences, a highly variable ledge, and the presence of endangered Atlantic salmon.

The complex geometry and utility crossings required constant communication and coordination between

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news&views — summer 2021

design calculations, complete combined planset, engineering estimate for construction, and construction support during project construction.

The project was completed on schedule, despite numerous and significant design change requests made by Maine DOT in the late stages of the project.

The Grist Mill Bridge is the first bridge in the U.S. to use a hybrid composite FRP girder as the main structural element.

TYLI’s Falmouth team for the project included Ben Toothaker, P.E., as the lead structural engineer and bridge project manager. Daniel Myers, P.E., Chris Taylor, P.E., Rick Hebert, P.E., Norm Baker, P.E., Jeffery Legere, and Roman Kravchuk all provided critical design assistance and review for the bridge project throughout the design process.

TYLI’s Shawn Davis, P.E. was the project manager and lead highway engineer for the surrounding highway reconstruction, with critical design assistance provided by Tim Kelley.

Industry Firsts Among its industry firsts, the Grist Mill Bridge represents the first use of the Composite Tub Girder technology developed at the University of Maine’s Advanced Structures and Composites Center. It is also the longest span FRP girder vehicular bridge in the U.S. and the first bridge in the U.S. to utilize a hybrid composite FRP girder as the main structural element.

In June 2021, the Maine Section of the American Society of Civil Engineers honored the Grist Mill Bridge project with the Kitty Breskin Award, which recognizes innovative practices in civil infrastructure projects built each year in Maine.

A recent issue of Transportation Builder from the American Road & Transportation Builders Association (ARTBA) also featured the Grist Mill Bridge on its cover and in an article by Ken Sweeney, president of AIT Bridges. >>>

summer 2021 — news&views

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PROJECT

WINS SAN DIEGO OFFICE TYLI Wins Amphitheater Structure at Menifee Central Park

TYLI’s San Diego, California, office provided preliminary

The City of Menifee’s Central Park in California extends

alternative of a dual shade/storage structure with timber

4.5 acres and is proposed to include a new signature

glulam arches and a polytetrafluoroethylene (PTFE) fabric

amphitheater in addition to the existing 65-foot by 35-foot

roof.

concrete stage. The City’s Community Services Department

This project represents a key partnership and collaboration

holds many events throughout the year at this location and will have live music on stage. Completing the Central Park amphitheater shade structure has been identified as a high-priority project to advance the City’s art and music performances.

TYLI's Architecture and Visualization Group (AVG) rendering of the shell structure at night.

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news&views — summer 2021

architectural concepts to the City of Menifee, and they were impressed. Ultimately, the City selected the preferred

between TYLI and Maffeis Engineering, a Global Infrastructure affiliate based in Italy, to provide an awardwinning structure for public use and enjoyment. >>>

PROJECT WINS

TYLI's AVG renderings of the shell structure during the day (above) and at sunset (left.)

summer 2021 — news&views

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PROJECT WINS IRVINE OFFICE TYLI Selected for Venta Spur/SR 133 Bicycle and Pedestrian Bridge The City of Irvine, California, recently selected TYLI’s Irvine office to provide construction management, inspection, and testing services for the USD 6M Venta Spur/SR 133 Bicycle and Pedestrian Bridge. The Venta Spur Trail is a major off-street, multi-purpose trail located in the northern portion of the City.

Constructing the 263-foot-long, Class I bicycle and pedestrian bridge will extend the Venta Spur Trail further east over SR 133 and provide greater connectivity to existing and future developments in the Orange County Great Park Neighborhoods, Portola High School, and the Orange County Great Park.

Additional project benefits for trail users and Irvine residents include reduced traffic congestion, enhanced

The Venta Spur Trail Bicycle and Pedestrian Bridge will span SR 133 and play a key role in creating a safer, more cohesive community.

safety, and increased environmental/health benefits.

TYLI’s construction management team includes five subconsultants and will be led by Project Manager Joseph Smith and Construction Manager/Structure Representative John Buckley. >>>

Project site and overview of the major elements.

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news&views — summer 2021

PROJECT WINS

TYLI has begun the inspection of the Mechanic Falls Bridge, a concrete arch slab bridge, in Mechanic Falls, ME.

FALMOUTH OFFICE TYLI Tasked with Inspection of Twelve Structures for MaineDOT As part of TYLI’s multi-year on-call contract with the

and Transportation Officials (AASHTO) Manual for Bridge

bridge maintenance program of the Maine Department

Evaluation, and the AASHTO Manual for Bridge Element

of Transportation (MaineDOT), the firm’s Falmouth, Maine,

Inspection.

office has been tasked with the inspection of 12 bridges located in Lewiston, Mechanic Falls, Minot, Rumford, Auburn, Dresden, and Bowdoinham. The TYLI team will perform routine and fracture critical inspections of five bridges. Seven other bridges require only routine inspections.

In addition to project management and inspection, TYLI will develop traffic control plans to accommodate the required lane closures during inspection. Reports for the inspections will be created through the Department’s InspectTech system. TYLI Falmouth has developed a detailed quality control process for this inspection work.

Inspections will be performed in accordance with the requirements and specifications of the National Bridge Inspection Standards (NBIS), the current editions of the MaineDOT Bridge Inspection Manual, the Federal Highway Administration (FHWA) Bridge Inspectors Reference Manual (BIRM), the American Association of State Highway

The structures in the contract for the 2021 inspection cycle include single- and multi-span conventional concrete and steel structures, a multi-span concrete arch-slab structure, steel through-truss structures, castin-place concrete slab structures, and a multi-barrel buried steel structure.

Some challenges to completing the inspections in this contract include access limitations due to tidal influences, proximity to a dam, and locations over privately controlled canals. Additionally, multiple structures have high peak traffic volumes, which require lane closures for access equipment.

TYLI’s Ben Toothaker is the Project Manager and an NBIS inspector for the project. Chris Taylor is the fracture critical inspection team leader and an NBIS inspector, and Jeff Legere will be assisting with the field inspections as a junior inspector. >>> summer 2021 — news&views

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PROJECT WINS

SACRAMENTO OFFICE TYLI Selected for Bridge Design Services to Government of Guam TYLI’s office in Sacramento, California, was selected as the structures subconsultant for the reconstruction of five bridges along Route 1, located in the villages of Hagatna, Asan, and Piti in Guam.

Route 1, also known as Marine Corps Drive, is a major arterial roadway that extends approximately 22 miles from Andersen Air Force Base to Naval Base Guam.

As part of the Defense Access Roads Project, Route 1 experiences high traffic volumes from heavy military vehicles. Infrastructure improvements are required due to the planned relocation of Marines located in Okinawa and other bases to Guam.

The U.S. Department of Defense-funded project will demolish existing bridges and construct new bridges able to carry heavier load vehicles. >>>

The Fonte River Bridge in Guam is one of five bridges along Route 1 to be reconstructed.

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news&views — summer 2021

PROJECT WINS TAIWAN OFFICE

Renderings of the new ESS Safety Testing and Certification Laboratory to be built in Taiwan, with TYLI providing PCM services.

TYLI Wins First ESS Safety Testing and Certification Laboratory Project in Taiwan

that manufacturers can improve the development and

The policy of developing green power and renewable

Taiwan’s ability to compete in the global ESS market.

energy is significant for mitigating climate change. An

In May 2021, TYLI’s Taiwan office was selected to

Energy Storage System (ESS) plays an indispensable

provide Professional Construction Management (PCM)

role in the development, acting as the bridge

services for “the ESS Safety Testing and Certification

between choppy renewable power and a constant

Laboratory Turn-Key Project.” The TYLI team will

electric energy supply.

ensure that the government’s requirements for the

In Taiwan, rechargeable ESS is widely used for electro

first world-class laboratory for ESS in Taiwan can be

mobility (e-Mobility), like electric motorbikes, electric

integration of ESS technologies. Furthermore, building a world-class laboratory to provide the international accreditation service for the industry will also increase

fully implemented and achieve the best investment

vehicles, and e-buses. By the end of 2020, there

benefits.

were more than 11,000 electric vehicles, close to 0.46

To be located in Tongluo Science Park, Miaoli County,

million electric motorbikes, 3,000 charging stations,

the new laboratory will provide service for up to

and many large Battery Energy Storage Systems

360-kilowatt (kW)/360kWh installed capacity ESS. The

(BESS) in the country, with the largest installed

maximum size of its testing product is the same as an

capacity up to 23 megawatt hours (MWh).

e-bus. The safety testing requirements for ESS batteries

Therefore, the government of Taiwan intends to fill

are under IEC62619/ECE R100.02. >>>

the demand for ESS safety testing and certification so

summer 2021 — news&views

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PROJECT WINS IDEAM OFFICE IDEAM Carrying Out Emergency Inspection, Evaluation and Reinforcement Works of “O Castro” Viaducts The Spanish Ministry of Transports (MITMA) has once again entrusted IDEAM, a T.Y. Lin company (IDEAM) in Madrid, Spain, to carry out the emergency inspection, evaluation, and reinforcement works of the “O Castro” viaducts on the A-6 highway connecting Madrid with Galicia. The project was initiated due to damage detected in the external post-tensioning cables of the concrete box girder cross section of the deck, including failures in the injection of mortar and a cable breakage.

Elevation and plan view of the “O Castro” viaducts in Spain.

The “O Castro” viaducts are made up of three independent structures, one for the carriageway in the Galicia direction and two on the Madrid carriageway. All three have the same typology and dimensions. The structures are made up of simply supported spans of 45 meters, which were executed using precast concrete box girder dowels with non-adherent external post-tensioning and without continuous bar reinforcement between segments.

The main pathology of these structures is the poor state of the exterior prestressing in the interior of the concrete box girder, which shows significant signs of advanced corrosion.

Interior view of the viaduct cross section with water inside.

Among the first emergency actions, the following have been proposed: • Limitation of the circulation of special vehicles.

• Reduction of the permanent load of the pavement by milling part of the pavement added in successive paving procedures.

• Restoration of the broken cable.

• Incorporation of additional reinforcement prestressing in the rest of the deck spans.

IDEAM is established as the reference structural engineering firm of the Spanish Ministry of Transports for emergency actions in existing structures. >>>

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Details of the external post-tensioning cable broken with corrosion.

PROJECT WINS

IDEAM Awarded MITMA Contract for Technical Assistance to Technical Direction of Spanish Road Administration IDEAM, a T.Y. Lin company (IDEAM) in Madrid, Spain, will lead the joint venture recently awarded a contract by the Spanish Ministry of Transports (Ministerio de Transportes, Movibilidad y Agenda Urbana, MITMA). The contract is for the next three years, with a possible one-year extension, for works involving technical assistance to the Technical Direction of the Spanish Road Administration.

The purpose of the contract is to provide technical assistance related to project revisions, construction, conservation, and technical regulations for road bridges and other structures of the Spanish Road Network.

IDEAM has been working for MITMA since 2007 on various contracts like the one recently awarded.

This includes code development. In recent years, IDEAM has developed the following works, among others: • Instruction of actions for road bridges, IAP-11.

• General specifications for road bridges, PG-3.

• Guide for the fatigue design of steel and composite road bridges with Eurocodes.

• Guide for the design of foundations with Eurocodes • National Annexes to Eurocodes 0 and 1 (Basis of Design and Actions on Structures).

With this new contract, IDEAM is established as the reference structural engineering firm for code development and technical issues related to bridges and structures for the Spanish Ministry of Transports. >>>

Cover pages of different Codes and Guides drafted by IDEAM for the Spanish Ministry of Transports.

summer 2021 — news&views

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PROJECT

MILESTONES WINS FT LAUDERDALE OFFICE

TYLI Receives Notice-to-Proceed for Port Everglades Project in Florida

PEV is one of the most significant seaports in the U.S., the #1 seaport in Florida by revenue, and one of the world's top three multi-day cruise homeports in the world in 2019. That makes this bulkhead replacement program vital to the Port’s continued success and future growth.

In September 2020, TYLI’s office in Fort Lauderdale, Florida, serving as Prime, along with Mott MacDonald and a team of consultants, was selected for the “Bulkhead Replacement Project Group 1” project for Broward County’s Port Everglades (PEV).

Group 1 projects include 9000 linear feet of steel sheet pile bulkheads that were built in the 1950s and 1960s and are of varying configuration and state of repair.

Upland improvements to dock aprons at each berth will be required to accommodate the new bulkhead construction.

This major win for TYLI’s Ports + Marine sector represents the firm’s first contract at PEV. Also significant is that a bulkhead replacement project only happens at a port every 50-100 years. This type of project positions TYLI to secure more port marine engineering projects in the future.

Port Operations and Stakeholder inclusion are also critical aspects of the project’s development process.

Successful project implementation will require construction phasing and sequencing to address cruise and cargo tenant operational constraints, considering the risks and threats of hurricanes and sea-level rise.

On July 6, 2021, the Notice to Proceed for the multimillion-dollar, deep-water marine project was issued. The project will last approximately seven to 10 years, starting with a one-and-a-half-year predesign phase, followed by design and permitting, procurement, and construction phases.

Additionally, the mitigation of construction impacts to the fragile corals of PEV’s Turning Notch Basin is another crucial consideration. For this project, TYLI has partnered with renowned scientists at Nova Southeastern University, leading experts in coral

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preservation and marine habitats. >>>

A view of Port Everglades, the #1 seaport in Florida by revenue.

(Ruth Peterkin/Shutterstock.com) news&views — summer 2021

PROJECT MILESTONES ROCHESTER OFFICE Mt. Hope Avenue Improvements Phase 2 Construction Proceeds Improvements to Mt. Hope Avenue (between Westfall Road and Rossiter Road) in Rochester, New York, continue under the watchful eye of TYLI’s Resident Engineer Mike Melino, NICET Level IV Inspector/Office Engineer Kaley Ostanek, NICET Level II Inspector Shawn Danek, EIT, and ReJob* Inspector Trainee Reggie Miller.

The Sloan Performing Arts Center is a welcome addition to the University of Rochester’s River Campus in Rochester, NY.

The USD 7.3 million project includes the replacement of active water mains and services; storm sewer work;

enhancements.

University of Rochester’s Sloan Performing Arts Center Opens with TYLI’s Civil Engineering Design

TYLI’s Rochester team is working closely with the City of

The University of Rochester’s new Sloan Performing

Rochester to minimize disruption on this heavily traveled

Arts Center (PAC) is complete. TYLI’s office in Rochester,

corridor. The improvements are being constructed in three

New York, provided the civil engineering designs

phases while maintaining a single lane of traffic in both

in collaboration with the project architect, SLAM

directions.

Collaborative.

The project is in the third phase in full boxout of existing

The 29,000-square-foot facility sits on the site of a former

pavement in preparation for placement of the flush

parking lot between Todd Union and Wilson Boulevard on

mounted curbed island, colored concrete, and asphalt

the University’s River Campus. It includes a 200-seat studio

pavement. The final part of construction is to complete the

theater, café, scene shop, dressing rooms, costume shop,

landscaping features, final top course, and final pavement

and green room.

markings.

TYLI’s Rochester team designed the relocation of existing

The Mt. Hope Avenue Phase II Reconstruction project will

utilities throughout the site to accommodate the new

benefit area businesses and residents, and commuters to

construction, which included addressing the unique

the city, the University of Rochester, and nearby Strong

challenges of extending the chilled water and district

Memorial Hospital. The project is scheduled for completion

hot water lines to provide the source for Sloan PAC’s

by November 2021.

cooling and heating. The team also designed the new

full-depth reconstruction; installation of new stone curb, sidewalk, Americans with Disabilities Act (ADA)accessible ramps, traffic signals, lighting, signing, and pavement markings; landscaping; and other streetscape

site stormwater improvements, sanitary sewer lateral, and

In addition to his

electrical/communications services.

inspection duties, Shawn has taken

With construction on an active campus, it was critical

some impressive

to develop a design that minimized service disruption

drone footage of the

during construction. TYLI examined different utility routing

construction that can be viewed here.

alternatives to allow the project to be constructed within

Mt. Hope Avenue construction in Rochester, NY.

the originally specified budget.

TYLI’s Nate Buczek, P.E., served as Project Manager and

*ReJob: The Rochester Environmental Job Training Program is a

Civil Engineer. In addition to management and design,

federally funded initiative that matches enterprising city residents

Nate coordinated with The University’s central utilities and

with open local jobs in the environmental construction field.

>>>

provided construction administration services. >>>

summer 2021 — news&views

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PROJECT MILESTONES SACRAMENTO OFFICE

The amendment, which almost doubles the size of the original contract, was sole sourced to TYLI, thanks in no

TYLI Expands Rail + Transit Capabilities in Northern California

small part to the excellent existing relationships the team

TYLI’s Sacramento, California, office was able to expand

office’s portfolio, they were also able to hire an experienced

its Rail + Transit portfolio and staff thanks to a substantial

engineer with track design capability to work on the

contract amendment from a happy client.

project, Jorge Solorio-Ayala, P.E. Jorge is working with two

The San Joaquin Regional Rail Commission (SJRRC)

other TYLI rail experts, Hugh Fuller, P.E., and Joel Trejo, P.E.,

recently awarded TYLI a USD 1.5 million contract amendment to provide trackwork design and other

has with the client.

In addition to adding rail expertise to the Sacramento

to deliver the work that must be approved by Union Pacific Railroad.

additional services for the new Tuolumne River Railroad

The amendment also added an environmental review of a

Bridge in Modesto, California.

new National Environmental Policy Act (NEPA) document

TYLI was originally selected to serve as Prime Consultant

to TYLI’s scope, which will be overseen by Jodi Ketelsen

to prepare bridge plans for a section of double-tracking of the line on the Altamont Corridor Express (ACE) Extension, from Lathrop to Ceres/Merced. SJRRC is the operator

and Robert Rodland, AICP. The TYLI team is led by Hans Strandgaard, P.E., TYLI Senior Project Manager and District Bridge Services Manager in Sacramento. >>>

and governing body of ACE, one of California’s popular commuter rail services that link California’s Central Valley with Silicon Valley.

TYLI was known to the client primarily as a bridge design firm and won the original contract based on those solid credentials. However, the team pointed out to the SJRRC that while two separate projects to the north and south were being prepared with trackwork, there was no track consultant for the bridge portion connecting the two projects. The TYLI team needed to know the specifics of the track design to finish the bridge design and connect all three projects together.

ONTARIO OFFICE TYLI Providing CM&I Services on Jurupa Valley Railroad Bridge and Underpass In 2020, TYLI’s office in Ontario, California, was selected by the County of Riverside Transportation Department (RCTD) to provide construction management and inspection (CM&I) services for the Jurupa Road Grade Separation in Jurupa Valley, California.

“This project is critical for easing traffic delays and creating a safer corridor of travel for users,” says TYLI’s Joseph Smith, P.E., CCM, manager of the project for RCTD. “This will be accomplished by separating trains from vehicular traffic, which is a complex undertaking.”

Construction started in July 2021, and involves constructing railroad and vehicular bridges in stages to maintain service while depressing Jurupa Road 20 feet below the existing Union Pacific Railroad (UPRR) crossing and Van Buren Boulevard.

TYLI is overseeing numerous stages of construction and coordinating closely with a variety of stakeholders for this project. The bridges and tunnel are expected to be

An existing bridge over the Tuolumne River adjacent to TYLI’s Tuolumne River Railroad Bridge project.

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completed by June 2023. >>>

PROJECT MILESTONES OLYMPIA OFFICE Update on SR 520 Montlake Project in Seattle, WA TYLI is the Lead Engineer for the USD 455 million Washington State Department of Transportation (WSDOT) SR 520 Montlake Project in Seattle. The designbuild project is led by Graham Contracting, Ltd., with TYLI’s Northwest offices providing engineering project management and serving as the Engineer of Record for all structural components.

The project consists of three significant structures: the Montlake Lid Bridge, the West Approach Bridge South (WABS), and the Pedestrian Land Bridge (PLB). The goals of the Montlake Project are to provide safe and improved regional mobility for both motorized and non-motorized traffic, as well as reconnect the Montlake communities on both sides of SR 520.

The Montlake Lid Bridge will support Montlake Boulevard, a new transit station, and a neighborhood open space over SR 520. As of Summer 2021, Stage 2A - the portion of the

Construction of the new WABS substructure (upper half of image on the left) leading up to the SR 520 floating bridge, alongside demolition of the old SR 520 eastbound bridge (lower half of image on the left). (Image: Property of Graham)

bridge carrying the neighborhood open space - has been completed, with 56 girders erected and the deck cast.

At just over a mile long, the WABS is an over-water

Traffic will be shifted onto the new structure in Fall 2021,

viaduct connecting to the SR 520 floating bridge over

allowing for demolition of the old bridge. TYLI’s innovative construction strategy minimized the project’s traffic and community impacts, resulting in only five mainline traffic shifts.

Lake Washington. The WABS will replace the existing seismically vulnerable eastbound bridge. TYLI designed the substructure with precast concrete columns, yet another construction innovation new to WSDOT. This eliminated the need for complicated formwork and accelerated the construction schedule.

Base isolation of the superstructure using triple friction pendulum bearings was employed to reduce the WABS substructure construction costs. The substructure of the WABS is near completion, as the final few piers will be constructed in early Fall 2021.

The PLB will expand the University of Washington’s arboretum walkway and connect it to local trails. It is in the early construction stage, with the north abutment having been cast in Summer 2021.

The Montlake Project is scheduled to be complete in June 2023. >>>

The Phase 2A segment of the Montlake Lid Bridge will carry Montlake Blvd. traffic during the demolition of the old bridge.

(Image: Property of Graham)

summer 2021 — news&views

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PROJECT MILESTONES LOS ANGELES OFFICE TYLI Leads LAX Runway 7R-25L Rehabilitation Design TYLI’s Los Angeles, California, office led the design of crucial improvements for one of Los Angeles International Airport’s

DID YOU

KNOW

(LAX) main arrival runways. Originally reconstructed in

?

2007, Runway 7R-25L’s concrete pavement section had suffered from severe and rapid deterioration.

TYLI presented Los Angeles World Airports (LAWA), the authority responsible for LAX and Van Nuys Airports, with three alternative solutions to improve the failing pavement. The approved alternative included mill and overlay of the existing runway concrete pavement, taxiway pavement rehabilitation, and the replacement of existing in-pavement centerline lights and edge lights.

Also included were upgrades to existing signage, navigational aids (NAVAIDS), new pavement markings, storm drains, and modifications to the Sepulveda Tunnel Bridge located beneath the runway’s structural section. The TYLI team also developed a hybrid solution focused on the runway’s highly used keel sections.

Throughout construction - which was completed ahead of schedule - TYLI provided construction administration and resident engineer services, as well as extensive coordination with LAWA, the Federal Aviation Administration (FAA), and

Dar Group, TYLI’s parent company, has placed among the top 10 in Engineering News-Record’s (ENR) Top 225 International Design Firms for over 15 years - including ranking among the world’s Top 5 Design Firms for Buildings (#3) and Transportation (#5). And their global presence is as strong as ever: Middle East (3rd), Africa (3rd), United States (7th), and Asia (8th).

ENR recently published the results of the 2020 surveys of the Top Non-U.S Construction Management (CM) and Program Management (PM) Firms. Dar ranked as follows:

other stakeholders.

Runway 7R-25L, with its new pavement, was reopened for normal operations on May 4, 2021. >>>

LAX Runway 7R-25L required rehabilitation due to severe deterioration of the concrete. (Image courtesy of LAWA)

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#4

Among international firms (contractors and design firms) in CM/PM (based on 2020 billings outside of the firm’s home country)

#3

Among Pure Design firms

#5

Among global firms (contractors and design firms) in CM/PM (based on 2020 billings including projects in home country)

PROJECT MILESTONES MALAYSIA OFFICE TYLI Provides Design and Construction Engineering Services for SUKE Elevated Highway Package CA4 in Kuala Lumpur Sungai Besi-Ulu Kelang Elevated Expressway (SUKE) is a 24.4-kilometer, three-lane, dual-carriageway that runs from Sri Petaling to Ulu Kelang in Kuala Lumpur, Malaysia. With 14 interchanges, SUKE extends to over 60 residential areas and connects to major highways and roads.

Due to the nature of the tall piers and site constraints where a major stretch of the main line is located in a forest with undulating terrain, an alternative precast girder launching system has been adopted instead of using a conventional crane for lifting.

All precasting work is being carried out at a temporary onsite precasting facility.

After being lifted to the bridge by to the designated launching location by a girder transporter. This process

The expressway is being built to promote economic growth

eliminates the need for extensive site

and reduce traffic congestion by serving as a reliable

clearing and ground improvements.

alternative to Middle Ring Road 2 (MRR2) during peak travel times.

a

gantry crane, precast girders are fed

Construction of the bridge structures is nearing completion. >>>

TYLI designed an alternative, non-prismatic pier shape for aesthetics while maintaining the required capacity and robustness.

The major highway project is divided into Section A (Packages CA1, CA2, CA3, and CA4) and Section B (Packages CB1, CB2, CB3, CB4, and CB5). TYLI’s Malaysia office is providing alternative bridge design, construction engineering, and temporary works review for Package CA4 (CH. 7800.00 to CH. 11000.00) for CHEC Construction (M)-MK Sepakat Joint Venture. The main line spans approximately 3.2 kilometers with 11 ramps, giving a total length of approximately 11.0 kilometers of bridge structure.

TYLI’s scope of work includes three parallel balanced cantilever bridges of various heights crossing the existing Cheras - Kajang Highway (Grand Saga) and the Klang Valley Mass Rapid Transit Sungai Buloh-Kajang Line (KVMRT SBK Line). The typical main span length is 100 meters, with a pier height of approximately 40 meters to 53 meters from the existing ground level.

Precast girder launching was used due to pier height and forested, undulating terrain.

The main line and ramp structures are typically 40-meterspan precast V-Girder integrated with cast-in-situ crosshead. The exception is for tight horizontal curve radius spans where a shorter length of precast U-Girder spanning 20 meters to 30 meters is adopted. The tallest pier rises to 53 meters from the existing ground level to the top of the bridge deck.

For the bridge superstructure design, TYLI Malaysia provided a cost-effective alternative precast girder that substantially reduced the number of girders for various deck width configurations. The design also adopts a continuous frame, eliminating the need for bearings at intermediate piers and greatly reducing future maintenance work requirements.

Completed SUKE bridge over a highway and MRT line.

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PROJECT MILESTONES TAIWAN OFFICE

For this Buildings sector project, TYLI’s Taiwan team implemented vertical technical communication and coordination and integrated the factory building, factory

Update on Micron Technology A3 Plant Project in Taiwan In early April 2019, TYLI’s Taiwan office was awarded to execute the “Project Management Services for the Micron A3 Project” in the Houli District, Central Taiwan Science Park, Taichung City, Taiwan.

Micron Taiwan, a 100% U.S.-owned company, is the client for the A3 plant. The groundbreaking for the new facility took place in 2019, with the goals of expanding the company’s cleanroom capacity and upgrading its technology levels in Taiwan.

The Micron A3 plant will introduce the most advanced 1α (1-alpha) nanometer process technology in the global Dynamic Random Access Memory (DRAM) industry. This will allow Taiwan to have a world-class memory chip

systems (electrical, air-conditioning, ventilation, fire protection, telecommunications, water supply and drainage and sanitation, cleanroom engineering), manufacturing procedure requirements, and machine installation. All work had to meet the tight construction schedule.

The Building Occupancy Permit for the A3 factory was obtained in March 2021, with the grand opening ceremony initially scheduled for this past June. However, the ceremony has been postponed due to the COVID-19 outbreak in Taiwan.

Micron Taiwan is the largest foreign-invested enterprise (FIE) in Taiwan and capable of making significant capital investments in manufacturing and R&D. At present, Micron has around 9,000 employees in Taiwan, with that number increasing at an average of 10% per year.

production base, with the investment for the newly built

Micron Taiwan announced the introduction of 1α process

plant totaling as much as USD 14.29 billion. The A3 plant is the

DRAM products in January 2021. So now, the new Taichung

first step of Micron’s investment plan in central Taiwan. The

A3 plant has to get online for mass production at the same

next phase will proceed depending on market demand.

time as Micron’s other Taiwan Advanced DRAM Factory. >>>

Micron A3 Plant Night View.

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PROJECT MILESTONES IDEAM IDEAM Completes Detailed Design of El Llano Viaduct on Atizapán - Atlacomulco Highway in Mexico IDEAM, a T.Y. Lin company (IDEAM) in Madrid, Spain, is providing structural engineering services to Aleática, the company in charge of building, operating, and maintaining the new 74-kilometer-long Atizapán Atlacomulco Highway section in Mexico. IDEAM recently finished the detailed design of El Llano viaduct, one of

The viaduct is 380 meters long with a span arrangement of 60m+130m +130m+60m. The prestressed concrete box girder will be able to carry four highway lanes (two lanes per direction) that require a total deck width of 22.06 meters.

The depth of the deck varies from a 7.20-meter maximum depth over the piers to a minimum depth of three meters at midspans and abutments. The deck segments will be cast using the balanced cantilever method. The number of columns has been minimized to obtain the most economical solution and reduce impacts on the valley.

The El Llano viaduct will become the seventh longest bridge (in span length) built in Mexico using this procedure. It will also be the widest in this typology without the need for lateral struts or

the most impressive structures for the project.

ribs in the slab cantilevers.

The El Llano viaduct is located to the northwest of

Once bridge construction is completed, the new viaduct

Mexico City, near the village of Villa del Carbón. The

will significantly enhance the safety of the existing roads

terrain where the viaduct is located is a complicated

and reduce transportation times, greatly benefitting the

one: a V-shaped valley with steep hills covered with very

surrounding communities. >>>

dense vegetation.

El Llano viaduct in Mexico: Elevation and plan view.

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PROJECT MILESTONES

Construction of one of the viaducts interconnecting AIFA with the Circuito Exterior Mexiquense.

IDEAM Develops Detailed Design of Structures Linking Mexico City’s Felipe Ángeles International Airport with Circuito Exterior Mexiquense This project, Acceses al Aeropuerto Internacional Felipe Ángeles, will create access routes to interconnect Felipe Ángeles International Airport (AIFA) in Mexico City,

Execution of the first precast viaduct.

IDEAM’s designs include various precast concrete girder bridges. Spans will range between 30 and 56 meters using American Association of State Highway and Transportation Officials (AASHTO) and Nebraska I-girders and a reinforced concrete substructure.

Being close to Mexico City, the project is located in an area of great difficulty as it relates to design and execution and high seismicity. Geotechnical conditions are of a certain complexity and involve deep pile foundations in all cases.

Mexico, with the Circuito Exterior Mexiquense in the

Currently, the works are in the first phases of construction

surroundings of Mexico City.

by the contractor, VISE. The expected date of completion is

The works comprise seven kilometers of viaducts with

Spring 2022. >>>

an approximate area of 54,000 square meters. IDEAM, a T.Y. Lin company (IDEAM) in Madrid, Spain, is developing the revisions, optimization, and value engineering for the original project and carrying out the detailed design and structural improvements for Aleática, a concessionaire.

The typologies of the four main composite (steel and concrete) viaducts designed by IDEAM incorporate 2300 metric tons of structural steel and have the following characteristics: • Viaduct 1: 242 meters long, maximum span of 71 meters.

• Viaduct 2, right carriageway: 141 meters long and 71-meter maximum span.

• Viaduct 2, left road: 171meters long and 73-meter maximum span.

• Viaduct “Eje 300”: 290 meters long, with a maximum span of 32 meters, located at a junction with a critical curvature.

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news&views — summer 2021

Deep pile foundations are required due to the area’s high seismicity.

CURRENT

EVENTS

Samuel De Champlain Bridge in Montréal, Québec, Canada. (Image credit: ©Thomas Heinser)

Three of TYLI’s Landmark Bridges Presented at 2021 International Bridge Conference®

Three of TYLI’s major Bridge sector projects were in the spotlight at the virtual 2021 The International Bridge Conference® (IBC) this past June.

Presented by the Engineers’ Society of Western Pennsylvania, the IBC annually attracts over 1,000 bridge owners and engineers, senior policymakers, government officials, bridge designers, construction executives, and suppliers from throughout the United States and abroad.

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CURRENT EVENTS

Rendering of the I-395 segmental bridges and new signature bridge in Miami, Florida.

Marwan Nader, Ph.D., P.E., TYLI Senior Vice President and Technical Director of the firm’s Bridge sector, presented a paper on the Samuel De Champlain Bridge in Montréal, Québec, Canada, entitled “Public-Private Partnership (P3) Procurement Method and Design-Build Delivery for the Samuel De Champlain Bridge” (IBC 21-45). Marwan’s coauthors on the paper included Guy Mailhot, Eng. M.Eng., FSCE, FEIC, Infrastructure Canada, and Jeff Rogerson, Flat Iron.

Opened to traffic on July 1, 2019, the Samuel De Champlain Bridge represents one of the largest infrastructure projects in North America. TYLI, in a Joint Venture with International Bridge Technologies and SNC-Lavalin, served as the Managing Partner and Lead Designer for the 3.4-kilometer-long signature bridge.

William Detwiler, P.E., TYLI Principal Project Manager, presented on the “Alternative Technical Concept (ATC) and Aesthetic Project Technical Enhancement (APTE) of the I-395/SR 836/I95 Project in Florida” (IBC 21-46).

The I-395/SR 836/I-95 Project is a partnership between the Florida Department of Transportation (FDOT) and the Miami-Dade Expressway Authority (MDX). The centerpiece of the mega project is the signature bridge in front of Miami’s Adrienne Arsht Center for the Performing Arts. After developing several bridge concepts, TYLI managed the design review and is providing technical oversight and postdesign construction services for both FDOT and MDX. Noel Shamble, TYLI Lead Bridge Designer and Visualization Group Director, presented “All Eyes on the Icon: Navigating the Type Selection Process of the I Street Lift Bridge” in Sacramento, California (IBC 21-72).

As the winner of a bridge design competition, TYLI was selected as Lead Architect for the I Street Bridge Replacement Project. The chosen design, called the Spring, consists of an 860-foot-long, 100-foot-wide bridge with a unique 300-foot-long basket-handle network tied-arch lifting span. The signature bridge will improve mobility for vehicles, bicyclists, and pedestrians while stimulating the local economy. >>>

Rendering of TYLI’s selected design for the I Street Bridge Replacement in Sacramento, California.

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CURRENT EVENTS TYLI Moderates First-ever Aviation Presentation for ACEC-FL’s Annual Conference TYLI’s Max Fajardo ended

Max’s unique understanding of aviation from both

his first year as Founding

the owner and consultant perspectives proved to be

Chairman of the Aviation

critical to establishing the Committee’s mission and

Committee of the American

agenda. For ACEC-FL’s 2021 Annual Conference, he

Council of Engineering

envisioned a moderated session with guests from

Companies of Florida (ACEC-

each of the three international airports in South

FL) by moderating the first-

Florida: Palm Beach International Airport (PBI), Fort

ever presentation by the

Lauderdale-Hollywood International Airport (FLL), and

Aviation Committee on an

Miami International Airport (MIA).

industry topic during ACEC-

On August 5, 2021, Max’s vision became a reality.

FL’s Annual Conference.

TYLI’s Max Fajardo moderated the first-ever aviation committee presentation at ACECFL’s Annual Conference.

His panel discussion on “Pandemic Challenges and

ACEC-FL has traditionally

Recovery of Florida Airport Programs” (ACEC-FL

had a strong presence in

Track) included Ralph Cutié, interim Director and

surface transportation, with

CEO of the Miami-Dade Aviation Department (MIA);

its Transportation Committee

Carlos Hernandez, P.E., Construction Management

acting as the liaison between

Supervisor for Broward County Aviation Department

the engineering consultant

(FLL); and Gary Sypek, Deputy Director Airports

community and the Florida

Development at Palm Beach County’s Department of

Department of Transportation.

Airports (PBI).

In the Summer of 2020, then-ACEC-FL President

As the moderator, Max led a discussion of thought-

Shahin Hekmat, P.E. - a friend and classmate of

provoking, open-ended questions about the impact

James Kanter, P.E., TYLI’s Fort Lauderdale’s Unit

of the pandemic on aviation, challenges faced,

Manager - asked James if he would like to serve on an

and recovery plans with the panelists - who each

Aviation Committee being organized for 2020-2021.

represented a core area of the aviation industry:

ACEC-FL’s goal was to expand its reach into Florida’s

planning, airport administration, and construction. >>>

consulting engineering community by attracting aviation professionals and supporting them as a liaison with airport administrators throughout Florida.

James immediately nominated Max as the Founding Committee Chair.

TYLI’s influence in the aviation industry in Florida is significant, and now it had two members on the inaugural Aviation Committee. Max was the clear choice for Founding Chair. Not only did he have a leadership position at TYLI, but Max was also a former Deputy Aviation Director for Capital Improvement Program (CIP)/Operations at Miami International Airport, one of Florida’s busiest airports.

The ACEC-FL aviation committee presentation included (left to right) Max Fajardo, Gary Sypek (PBI), Carlos Hernandez (FLL), and Ralph Cutie (MIA).

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CURRENT EVENTS

(Rikki Chan/Unsplash.com)

Curb Management: A practical start to implementing smart mobility in your community Written By: Brandon Orr, MCIP, RPP, Mobility Planning Lead at TMIG, a T.Y. Lin International Company, for Ontario Traffic Council

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A cold November evening in 2013 was when I took my first rideshare, I found myself participating in a paradigm shift as app-based mobility solutions brought the luxuries of ondemand transportation to the average person at affordable prices. What was interesting was not the act of ridesharing (we had taxis for quite a while), but rather the underlying business model and technology that allowed it to exist, and what it represented for the future of mobility and the street curb.

CURRENT EVENTS Historically, municipalities had taxi pricing schedules for specific periods that required a license (often referred to as medallions) to limit the supply of taxis, but app-based ridesharing offered a solution that applied the concept of supply & demand in real-time without licensing restrictions. An oversupply of drivers would result in fees going down to attract more riders, while an undersupply would result in higher fees to attract more drivers. Smartphones and 4G telecommunications networks made this possible by allowing services to be adjusted instantly, as opposed to annually or seasonally.

Since their introduction many questioned whether the monetary incentive of app-based rideshares and the lack of regulation was a net benefit with companies facing criticism in relation to further contributing to roadway congestion. A 2021 study from the Massachusetts Institute of Technology (MIT) conducted a historical review of travel data across the U.S. and concluded that ridesharing had generally increased road congestion in urban areas with minimal impacts on personal car ownership¹.

This is a story that continues to play out in various forms as new private mobility options emerge including e-scooters that currently face criticism for their contribution to urban cluttering and environmental impacts. A study published by North Caroline State University in 2019 estimated that the carbon footprint of e-scooters is ~202g of CO² per Km per passenger over their entire life cycle, which is equivalent to a conventional car and 3.5 times more than an electric one2. The City of Toronto recently opted out of Ontario’s e-scooter pilot in May 2021 stating concerns related to safety, accessibility, enforcement, and liability, which is consistent with several other major North American cities³.

The global on-demand mobility market was estimated to be valued at over $99B USD in 2019 and is expected to reach over $238B by 2026 growing at a rate of 15.4% per annum4.

Most rideshare companies are now referred to as Transport Network Companies (TNCs) to emphasize the spectrum of mobility services they offer between ridesharing, bikeshares, e-scooters, and deliveries. Their influence and contributions to mobility are increasing and are projected to continue to be commonplace in our lives as autonomous vehicles (AVs) and vertical take-off and landing (VTOL) vehicles emerge over the next decade and beyond.

These realities emphasize the dichotomy between for-profit mobility and public infrastructure and the need for municipalities to be proactive in addressing emerging mobility rather than reactively addressing it. In Ontario there is an estimated $34.7B infrastructure deficit attributed to roads and structures meaning we are falling short on maintaining our existing mobility network5. Regional traffic models, master plans, and land use plans are developed every few years to address a mobility sector that is changing by the day. If our recent experiences have shown us anything, it’s that tomorrow’s mobility technology won’t ask for permission, it will arrive on our street curbs first and beg for forgiveness afterwards.

Investing in curbside management presents a practical starting point for your community to manage existing and future needs, mitigate maintenance costs, and create new placemaking opportunities by focusing on getting more out of what you already have rather than building new and costly infrastructure.>>> ________________________ 1 (Diao, Kong, & Zhao, 2021) 2 (Holingsworth, Copeland, & Johnson, 2019) 3 (City of Toronto, 2021) 4 (Globe Newswire, 2020) 5 (Gismondi, 2021).

Rendering of TYLI’s selected design for the I Street Bridge Replacement in Sacramento, California.

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IN THE

NEWS in

PA N A M A UPCOMING

PUBLISHED ARTICLES

The Summer 2021 issue of the American Society of Highway Engineers’ ASHE

Scanner features TYLI’s Navy Pier Flyover Lakefront Trail Improvements project.

EVENTS

“Connecting Chicago’s Lakefront” (pg.

36) by TYLI’s Lawrence Meston, P.E., describes the design and construction of the safer, scenic path that separates thousands of daily trail users from city traffic and street closings for the Navy

2021 ASCE Convention A Virtual Event | October 6-8

Pier entertainment complex in Chicago, Illinois. >>>

TYLI’s Aswathram Balasubramaniam, P.E., Deputy Director of the Facilities sector, and Kaveh Afshinnia, PhD., P.E.,

2021 ACEC Fall Conference Marco Island, Florida | October 27-30

Lead Structural Engineer, from the firm’s Alexandria, Virginia, office had their article “Application of post-tensioning in elevated metro stations” published in the September 2021 issue of Concrete Magazine.

2021 APTA’s TRANSform Conference and EXPO Orlando, Florida | November 7-10

In the article, the authors describe how the application of post-tensioning could help achieve long cantilever concrete beams in elevated stations for Panama Metro Line 1 in Panama City, Panama. The article also describes why post-tensioned cantilever girders for this particular project were the most efficient and appropriate system

2021 ASBI 33rd Annual Convention Tucson, Arizona | November 8-10

- eliminating traffic disturbance in the main roadway, reducing the duration of construction, and offering a suitable system with highquality and durable materials. >>> One of the elevated stations designed by TYLI for Panama Metro Line 1 in Panama, constructed using post-tensioned cantilever girders for efficiency and quality.

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2021 Self-Help Counties Focus on the Future Conference Virtual Conference | November 15-16

West Gates at Tom Bradley International Terminal, Los Angeles International Airport in California.

(Image Courtesy of LAWA)