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April 28, 2016

Public works: Transportation

Photo courtesy of WACA
SR 520 corridor work included a landscaped lid at 84th Avenue Northeast.

SR 520 Eastside Transit and HOV Project

Location: State Route 520 corridor between Medina and Bellevue

Owner/developer: Washington State Department of Transportation

Team: Eastside Corridor Constructors, general and concrete contractor; Cadman, ready-mix supplier

The Eastside Corridor and HOV Project widened 2.5 miles of the state Route 520 corridor from west of Evergreen Point Road to east of 108th Avenue Northeast in Bellevue.

Eastside Corridor Constructors, a joint venture of Granite Construction Co. and PCL Construction Services, completed the work under a $306.3 million contract.

The project involved construction of new shoulders, noise walls, transit facilities, general-purpose ramps, direct-access ramps for buses and carpools at 108th Avenue Northeast, and a bicycle and pedestrian path. Landscaped lids were constructed over SR 520 at Evergreen Point Road, 84th Avenue Northeast and 92nd Avenue Northeast.

Work also included construction of fish-passable culverts, stormwater detention and treatment facilities, and stream and wetlands improvements.

ECC began work on the design-build project in early 2011 and finished in mid-2015. In all, more than 84,000 cubic yards of concrete were used.

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