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Reconnecting to the Great River of the West Construction of the Waterfront Park project in Vancouver, Washington, is now underway. On 20 July, the City of Vancouver and project design team had a groundbreaking ceremony to celebrate the start of construction of the Vancouver Waterfront Park. The 7.3-acre site will provide public open spaces along the waterfront, including a new event space for concerts and outdoor performances, as well as the Grant Street pier and plaza as a primary civic hub. Recreational and educational amenities will include a sand beach on an elevated terrace, a half-mile of new waterfront trail, and numerous displays of public art along the site. Ultimately, the project will create a new urban waterfront for the city and will reconnect its residents and visitors to the Columbia River. In 2008, BergerABAM began working with the City and developers to craft the overall master plan for 20 new city blocks of urban development and associated roadway networks comprising over 32 acres of the city. When complete, the new development will offer space for approximately 3,500 new residents and over 1 million square feet of new commercial and office space. The final design and permitting tasks started in 2012, and the first phases of the project are now under construction. BergerABAM is prime consultant on this project and is providing structural engineering, landscape architecture, urban design, and environmental services. A key feature of the waterfront development, and arguably the flagship of the project, is the Grant Street pier. When constructed, the pier will be a uniquely shaped cable-stayed structure. The superstructure was designed by Martin/Martin, an engineering firm out of Denver, Colorado, who partnered with Larry Kirkland, a renowned artist who specializes in structural public art. The superstructure consists of post-tensioned, cast-in-place concrete and will have a 3-foot-thick deck topped with heavy timber surfacing. The BergerABAM team was responsible for urban design, environmental permitting, and the substructure design of the pier. It will extend 100 feet out over the water and will be supported by cables and backstays. Because the pier cantilever will be suspended this distance over the water, the design consists of a very robust abutment and substructure.

The official groundbreaking at Vancouver Waterfront Park.

During construction, the substructure will be built inside a cofferdam that will allow the contractor to work at any river stage. Inside the cofferdam, the contractor will drill twentyseven, 5-foot-diameter drilled shafts. The cofferdam serves two purposes: it will act as a work isolation cell, and the back wall of the cofferdam will provide resistance against lateral spreading as a result of liquefaction. The rear wall of the bulkhead will be anchored back to Rendering of the Grant Street Pier courtesy of the studio the upland area with about 30 ground anchors, of Larry Kirkland. and one of the backstays will be supported by 12 micropiles. Also, with its thin-body profile and long cantilever, the superstructure will feature one or more tuned-mass dampers to control vibration. Currently, the team is providing bidding and construction support for the pier and the park. With construction now underway, the Vancouver Waterfront Park is expected to be completed in early 2018.

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Profile for BergerABAM

Inside/Out Newsletter | Autumn 2016 | Issue 63  

BergerABAM is a consulting firm offering services in the areas of planning, civil and structural engineering, architecture, environmental se...

Inside/Out Newsletter | Autumn 2016 | Issue 63  

BergerABAM is a consulting firm offering services in the areas of planning, civil and structural engineering, architecture, environmental se...