Arizona 9 April 29, 2018

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April 29 2018

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Vol. II • No. 9

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I-10 Widening, Dust Detection Project Under Way Near Picacho

By Chuck Harvey CEG CORRESPONDENT

A warning system for dust storms — a hazard for motorists in windy parts of America’s Desert Southwest — is being built in southern Arizona.

Detection of strong winds, along with warnings of possible whiteout conditions and potential vehicle damage from blowing dust and sand are part of a $58.6 million Interstate 10 widening project south of Phoenix and north of Tucson, near Picacho, Ariz.

The dust detection system and warning zone is the first of its type in the nation. While dust detection equipment is being set up, a 4-mi. stretch of highway will be realigned and widened to three lanes in each direction. Previously, the highway featured two lanes each way.

Construction is expected to last for about two years. Clearing of the site began in December 2017 and the improved highway should be ready for use in fall of 2019.

The project is unique in addressing blowing dust, a serious problem that can hinder vision and make driving hazardous on windy days in the desert. Dust and sand also can damage car windows. Dust storms carry small rocks and other materials that can crack

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Arizona Department of Transportation photo

Construction crews will build a new interchange at I-10 and state Route 87. It will carry SR 87 over the Union Pacific Railroad tracks.

or chip the windshield. They are the third largest cause of weather fatalities in the state over the last 50 years, according to a report published in 2016 by meteorologists with the National Weather Service and a University of Arizona atmospheric sciences researcher. Fatalities from extreme heat or cold rank first and flash flooding is second, according to the report.

According to the report, 157 people died and 1,324 were injured in 1,521 dust-caused incidents on Arizona highways between 1955 and 2011.

Crews will set up a dust-detection and warning zone designed to alert drivers to dangerous conditions in an area prone to blowing dust.

“This project includes two elements that will enhance safety for those using this busy section of Interstate 10,” said John Halikowski, ADOT director in a release. “The innovative dust detection project will provide drivers with fast information when conditions warrant.”

Halikowski added that adding a lane in each direction on I-10 will allow traffic to move more smoothly through a key commerce corridor.

The project includes widening of I-10 from milepost 209 to 213 and realigning the freeway to remove see INTERCHANGE page 2

ADOT Rolls Out Road Projects for Spring, Summer 2018

By Lori Tobias CEG CORRESPONDENT

Work is continuing on Arizona’s largest ever single highway project, with controlled rock blasting scheduled to begin on two segments this spring. The $916 million Loop 202 South Mountain Freeway features 22 mi. of new freeway; a double roundabout interchange; 4.5 mi. of widening improvements; three genArizona Department of Transportation photo

The $916 million Loop 202 South Mountain Freeway is Arizona’s largest ever single highway project.

eral purpose and one high occupancy lanes; 40 bridges and one pedestrian bridge; five multi-use underpass crossings; 11 mi. of sound walls. 2.5 diverging diamond interchanges; 13 interchanges; and a six-milelong bike/pedestrian path.

Work on the project began in 2017 and is scheduled to continue through 2019. The state partnered with multiple private firms — Fluor Enterprises Inc., Granite Construction Co., Ames Construction Inc. and lead designer Parsons Brinckerhoff Inc. — to form the Connect 202 Partners. After construction is complete, Connect 202 will provide maintenance for 30 years.

The South Mountain Freeway project is just one of see ADOT page 6

Page 2 • April 29, 2018 • www.constructionequipmentguide.com • Arizona State Supplement • Construction Equipment Guide

Crews Building Piers to Support New I-10 Interchange INTERCHANGE from page 1

Contract for the second project went to a joint venture: Ames Construction and Combs Construction. Cost of the second project is estimated at $36.6 million.

Work on the second project was expected to start in early April 2018 and continue to summer of 2019.

an S curve. Construction crews also will build a new interchange at I-10 and state Route 87. It will carry SR 87 over the Union Pacific Railroad tracks.

Initial Work Initial work on the 4-mi. stretch of I-10 included clearing land for work that will shift I-10 to a straighter path about 500 ft. north of its current alignment.

The work is funded in part by a $54 million federal grant that also will help pay for a second, I-10 widening project 4 mi. north of Interstate 8 in Casa Grande. When the two projects are finished, I-10 will provide three lanes in each direction between Casa Grande and Tucson.

Coffman Specialties Inc. of San Diego won a $58.4 million contract for the first project. Coffman is owned by women and is an enterprise specializing in the construction of large public and governmental projects.

Since its founding in 1991, the company has completed nearly 100 major highway, airfield and waterway projects, focusing on cement treated pavements, mass excavation, structural concrete of all types, bridges and other complex infrastructure.

About 12 subcontractors have been selected for the project. Major subs include Sturgeon Electric of Henderson, Colo.; Horizontal Boring LLC of Laveen Village, Ariz.; and Tee Pee Contractors of Casa Grande, Ariz., for pipe installation.

Between 50 and 60 workers on the job daily at the construction site.

Pier Installation Current work includes finishing clearing of the project site in preparation of widening the highway. Crews also are installing piers that will support the traffic interchange with SR 87.

Heavy equipment at the construction site includes a Caterpillar 834B; Caterpillar 16H blade; Caterpillar 623E; water wagon; Caterpillar 637E; Caterpillar 815F2 sheep foot; and a Volvo AF40.

Second Widening Project Planned A second widening project is planned for I-10, about 10 mi. north of the first, at milepost 196-200, between Casa Grande and Tucson, Ariz.

It includes constructing an interchange and adding one lane in each direction in the current median, adding a concrete median and replacing the bridge over Jimmie Kerr Boulevards at milepost 199.

Arizona Department of Transportation photo

The project includes widening of I-10 from milepost 209 to 213 and realigning the freeway to remove an S curve.

Arizona Department of Transportation photo

A warning system for dust storms — a hazard for motorists in windy parts of America’s Desert Southwest — is being built in southern Arizona.

Key Corridor Interstate 10 is a key commerce corridor.

It connects the two largest cities and metropolitan areas in Arizona, Phoenix and Tucson. It is a vital route for Arizona residents travelling between the two largest regions in our state. Widening the freeway to six lanes in this area will promote improved traffic flow and safety.

Dust Detection Technology The dust detection zone is the first of its kind in the nation.

It includes two types of radar to detect blowing dust along the freeway and the distance approaching I-10. Short-range detectors will be located every mile, as well as half-mile increments in the center of the area.

The long-range detector will be located at the north end of the construction area, away from Newman and Picacho peaks.

Electronic message boards will be placed at each end of the dust detection zone and in the center. They will provide messages visible to drivers travelling in both directions.

The dust detection zone also will feature variable speed limits to slow drivers from 75 mph to 35 mph, dropping 10 mph for each 1,000 ft. to allow drivers time to safely reduce their speed during dust storms.

Variable speed limits are speed limits that change based on road, traffic and weather conditions. The speed limits are enforceable.

Closed-circuit freeway cameras will be set up so Arizona Department of Transportation traffic operators in Phoenix can view driving conditions in real time.

Electronic message boards will relay information about wind and driving conditions. The closed-circuit cameras will eventually be made available for public viewing see INTERCHANGE page 3

Arizona Department of Transportation photo

Detection of strong winds, along with warnings of possible whiteout conditions and potential vehicle damage from blowing dust and sand are part of a $58.6 million Interstate 10 widening project south of Phoenix and north of Tucson, near Picacho, Ariz.

Construction Equipment Guide • Arizona State Supplement • www.constructionequipmentguide.com • April 29, 2018 • Page 3

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Lane Widening Project Will Bring Economic Benefits INTERCHANGE from page 2

on ADOT’s traveler information website and for use by media in the Phoenix and Tucson areas.

Short-range radar detection equipment detection equipment, manufactured by Vaisala, a radar equipment manufacturer based in Helsinki, Finland, will be placed on poles at each mile throughout the dust detection zone, as well as every half mile between mileposts 212 and 214 — the area where historically most dust-related crashes have occurred. They will identify visibility based on dust particles in the air. They are accurate as much as one mile.

Long-range radar equipment will be housed inside a radome — a dome that protects equipment and is generally made of material that allows radio waves to pass through — and located at the north end of the project to avoid potential interference from Newman and Picacho peaks. The peaks are located near the south end of the project.

The radar, which can look 30 mi. and more into the desert, will primarily be used to identify blowing dust 3 to 5 mi. from the freeway and approaching as a possible dust storm on I-10.

warning system is less localized than the dust detection project.

The dust detection zone also makes the Arizona project unique.

Economic Benefits The I-10 widening and dust detection project could provide some economic benefits to the area. I-10 is a vital route for commercial traffic, not only in Arizona, but nationwide along I-10 between California and Texas and beyond. Billions of dollars in imports from Mexico enter the United States in Arizona, move north on Interstate 19 to Tucson and then across the country on I-10.

“Improvements to I-10 that improve safeArizona Department of Transportation photo Construction is expected to last for about two years. Clearing of the site began in ty and traffic flow, without question will creDecember 2017 and the improved highway should be ready for use in fall of 2019. ate economic growth in Arizona as more commercial and resident traffic uses I-10,” Arizona Department of Transportation can present a hazard for drivers. But no plans said Tom Herrmann, public information reports that dust storms, most common dur- are in the works for additional dust detection officer for Arizona Department of Transportation. “In addition, Maricopa ing the summer monsoon season, can occur projects at this point. year-round in desert areas. And localized California also has had problems with County is the fastest -growing county in the winds can create dust channels that severely dust storms, especially in desert areas like United States, making widening this vital reduce visibility in a small area.

Palm Springs and in the San Joaquin Valley. corridor even more important.”

(This story also can be found on Success of the dust detection project could But the storms are considered rare. When lead to installation of dust detection systems they do begin to kick up, various weather Construction Equipment Guide’s webin other desert regions and possibly on I-40 services including the National Weather site at www.constructionequipmentin northern Arizona where blowing snow Service issue a warning. But the weather guide.com.) CEG

Page 4 • April 29, 2018 • www.constructionequipmentguide.com • Arizona State Supplement • Construction Equipment Guide

ADOT to Improve Dynapac Strengthens Dealer Network, Adds Pavement Along I-40, Road Machinery in Arizona, S. California I-17 This Summer Arizona Department of Transportation has started projects that will improve pavement along 182 lane mi. of Interstate 40 and Interstate 17 in the Flagstaff area, addressing deterioration caused by snow and snowplowing, the large number of freeze-thaw cycles the area sees each year and heavy use by commercial vehicles.

With projects planned along 34 mi. of I-40 west of Flagstaff and on 28 mi. of northbound I-17 just south of Flagstaff, motorists should budget extra travel time and get the latest project information before leaving by visiting az511.gov or calling 511.

On April 2 crews started rebuilding the westbound lanes of I-40 west of Williams between mileposts 156 and 161.

Before the start of the winter season, crews rebuilt the eastbound lanes in this stretch.

As work resumes on the $34 million project, westbound traffic on I-40 will cross over the median on a temporary road and share lanes with eastbound I-40 traffic through the project area, with one lane of travel in each direction separated by a concrete barrier.

In mid-April, ADOT will start a pavement-improvement project on I-40 between mileposts 179 and 162 from Parks to Cataract Lake near Williams.

This $35.3 million project includes areas between mileposts 167 and 172 where crews will fully reconstruct the roadway. Because of this, traffic will cross over and share lanes with opposite traffic, separated by a concrete barrier, between Garland Prairie and Pittman Valley roads. Work will begin in the westbound lanes.

Crews are working from 5 a.m. to 6 p.m. Monday through Friday. Drivers can expect lane closures through the project area.

In the next several weeks, a project replacing pavement on the northbound lanes of I-17 approaching Flagstaff will get under way, with crews working from milepost 312 to milepost 340 near the I-17/I-40 junction. The project will reconstruct northbound I-17 between mileposts 312 and 314.

This $24.4 million project includes replacing the bridge decks in each direction on the I-17 overpass at Willard Springs Road, near milepost 326.

The majority of the I-40 and I-17 work is expected to be completed this fall, with additional work happening the following spring.

Also, in April, restrictions will begin for work on the I17/I-40 interchange in Flagstaff, revamping I-40 bridges over I-17 and Beulah Boulevard. This $10 million project is scheduled to wrap up by the end of the year.

Later this year, crews will return to put down the final layer of asphalt, known as friction course, on I-40 between Parks and Riordan from milepost 179 to 191. This will complete a $13.9 million pavement-improvement project that began last summer.

For more information, visit azdot.gov/projects.

(This story also can be found on Construction Equipment Guide’s website at www.constructionequipmentguide.com.)

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First Loop 202 South Mountain Freeway Bridge Opens to Traffic in Lavine, Ariz.

Drivers in Laveen, Ariz., bridge. are now using the first bridge Additional work needed completed for the South to complete the interchange Mountain Freeway, marking will include paving the a milestone for the Arizona ramps and mainline freeway, Department of signage, lighting, final stripTransportation’s Loop 202 ing, signals and landscaping.

South Mountain Freeway The South Mountain project.

Freeway will provide a longFollowing a five-month Following a five-month closure of the Elliot Road and planned direct link between closure of the Elliot Road 59th Avenue intersection, crews have completed a the East Valley and West and 59th Avenue intersec- bridge that allows Elliot Road traffic to safely travel Valley and a much-needed tion, crews have completed a over the South Mountain Freeway mainline, which will alternative to I-10 through bridge that allows Elliot open to traffic by late 2019. downtown Phoenix.

Road traffic to safely travel Approved by Maricopa Since late October, crews have con- County voters in 1985 and again in over the South Mountain Freeway mainline, which will open to traffic by structed more than 2,000 ft. of road- 2004 as part of a comprehensive way improvements, including: late 2019. regional transportation plan, the South • Installing underground utilities and Mountain Freeway will complete the The extended closure, which required motorists to detour to drainage structures, including several Loop 202 and Loop 101 freeway sysDobbins Road between 59th and 75th 4-ft.-wide storm drain crossings; tem in the Valley.

• building retaining walls, called avenues, allowed crews to accelerate For more information, visit construction on one of the 13 inter- mechanically stabilized earth walls; SouthMountainFreeway.com.

• moving more than 300,000 cu. changes for the South Mountain (This story also can be found on Freeway. It also is one of 40 bridges yds. of earthwork to create bridge Construction Equipment Guide’s planned for the 22-mi.-long freeway approaches and ramps; and website at www.constructionequip• constructing a 272-ft., two-span mentguide.com.) corridor.

Construction Equipment Guide • Arizona State Supplement • www.constructionequipmentguide.com • April 29, 2018 • Page 5

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Page 6 • April 29, 2018 • www.constructionequipmentguide.com • Arizona State Supplement • Construction Equipment Guide

ADOT Projects Include Diverging Diamond Interchange Later this year, crews will return to put down the final layer of asphalt, known as friction course, on I-40 between Parks and Riordan from milepost 179 to 191. This will complete a $13.9 million pavement-improvement project that began last summer.

ADOT from page 1

numerous major roadway projects under way around the state.

Here’s a look at some of the biggest: Phoenix Also, in the Phoenix area, work is slated to begin this fall on a diverging diamond interchange to replace roundabouts at the Interstate 17/Happy Valley Road interchange. The project is designed to provide efficient and safe traffic flow for a growing area of north Phoenix.

A diverging diamond interchange has one major difference from standard diamond interchanges common around Arizona in that local street traffic makes a temporary shift to the left side while crossing the freeway, allowing for direct left turns onto entrance ramps without waiting at an additional traffic signal.

The final project cost has not yet been tallied.

Arizona Department of Transportation photo

The South Mountain Freeway project is just one of numerous major roadway projects under way around the state.

Casa Grande In southern Arizona, ADOT and the Federal Highway Administration (FHWA) have initiated a project to widen Interstate 10 between Casa Grande and Tucson, from just south of Earley Road to Interstate 8 (mileposts 196-200) in Casa Grande. Work began earlier this spring and is scheduled for completion in fall 2019.

The project will add one lane in each direction adjacent to the median, with a concrete barrier separating directions of travel, and replaces the existing bridge over Jimmie Kerr Boulevard and the Union Pacific Railroad. The project includes installation of a fiber optic trunk line between milepost 186 and milepost 209.

Verde Valley Crews recently reached a new Maricopa milestone for the State Route 260 Pre-construction work began in widening project between Camp March on a project to reconstruct Verde and Cottonwood in the nearly 2 mi. of SR 347 in Verde Valley, switching traffic Maricopa on a new alignment that along two stretches to new eastwill include replacing the existing bound lanes and opening three at-grade intersection of SR 347 roundabouts. and the Union Pacific Railroad The $62-million project covers tracks with an overpass. The work Arizona Department of Transportation photo nine miles of SR 260 west of I-17 will occur between Hathaway and is on schedule. By the end of The South Mountain Freeway project features 22 mi. of new freeway.

Avenue and Desert Cedars Drive this year, the stretch will be a and also includes constructing a Arizona Department of Transportation photo divided four-lane highway with seven roundabouts at new six-lane realignment of Honeycutt Avenue, Work on the South major intersections, increasing safety and capacity while Honeycutt Road and the Maricopa-Casa Grande Mountain Freeway began handling traffic more efficiently.

Highway; building a new connection between the in 2017 and is scheduled Maricopa-Casa Grande Highway and Honeycutt Road; to continue through 2019.

Flagstaff installing traffic signals and fencing; building sidewalks The Arizona Department of Transportation has begun and raised medians; and establishing landscaping. The work on three projects in the Flagstaff area, including project is scheduled for completion by late 2019. pavement improvements along 182 miles of Interstate 40 and Interstate 17 to address deterioration caused by snow Yuma and snowplowing; the large number of freeze-thaw After a five-month break to accommodate winter agricycles the area sees each year; and heavy use by commerculture traffic, ADOT crews in Yuma resumed an $8.1 cial vehicles. million project converting the Araby Road interchange at Crews recently started rebuilding the westbound lanes Interstate 8 to modern roundabouts. Last fall, crews comof I-40 west of Williams between mileposts 156 and 161. pleted a roundabout serving the north side of I-8 and conthe northbound lanes of I-17 approaching Flagstaff will The eastbound lanes on this stretch were rebuilt prior to winnecting with Araby with the westbound I-8 ramps. The begin, with crews working from milepost 312 to milepost ter. roundabouts enhance safety and improve traffic flow. They With work again under way on the $34 million project, 340 near the I-17/ I-40 junction. The project will reconstruct are designed to accommodate large trucks, farming equipwestbound traffic on I-40 will cross over the median on a northbound I-17 between mileposts 312 and 314. ment and recreational vehicles.

This $24.4 million project includes replacing the bridge temporary road and share lanes with eastbound I-40 traffic Araby Road, also known as State Route 195, connects I-8 through the project area, with one lane of travel in each direc- decks in each direction on the I-17 overpass at Willard and the San Luis Port of Entry and is a vital corridor for interSprings Road, near milepost 326. tion separated by a concrete barrier.

The majority of the I-40 and I-17 work is expected to be national commerce. The interchange is one of the busiest Also in April, ADOT will start a pavement-improvement completed this fall, with additional work happening the fol- intersections along I-8 in Yuma, used by about 22,000 vehiproject on I-40 between mileposts 179 and 162 from Parks cles per day. The new design is expected to accommodate lowing spring. to Cataract Lake near Williams.

Restrictions are set to begin for work on the I-17/I-40 increasing traffic in the area through at least 2035.

The $35.3 million project includes areas between mile(This story also can be found on Construction posts 167 and 172 where crews will fully reconstruct the interchange in Flagstaff, revamping I-40 bridges over I-17 and Beulah Boulevard. This $10 million project is scheduled Equipment Guide’s website at www.constructionequiproadway. mentguide.com.) CEG In the next several weeks, a project replacing pavement on to wrap up by the end of the year.

Construction Equipment Guide • Arizona State Supplement • www.constructionequipmentguide.com • April 29, 2018 • Page 7

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Page 8 • April 29, 2018 • www.constructionequipmentguide.com • Arizona State Supplement • Construction Equipment Guide

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