PACIFIC NORTHWEST EDITION
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July 3 2022 Vol. VI • No. 14
“The Nation’s Best Read Construction Newspaper… Founded in 1957.” Your Pacific Northwest Connection – Patrick Kiel – 1-877-7CEGLTD – pkiel@cegltd.com
Flatiron, Lane Construction Demolish Bridge in Bellevue
WSDOT photo
The joint venture of Flatiron and Lane Construction recently demolished the Main Street Bridge in Bellevue, Wash., a major component of the $705 million I-405, Renton to Bellevue Widening and Express Toll Lanes Project. This marks one of the largest ever design-build projects for the Washington State Department of Transportation.
The joint venture of Flatiron and Lane Construction have made considerable progress on one of the largest construction projects in the Puget Sound region. Crews demolished the Main Street Bridge in Bellevue, Wash., across Interstate 405, over the weekend of June 17 as part of the $705 million I-405, Renton to Bellevue Widening and Express Toll Lanes Project. “One of the largest ever design-build projects for the Washington State Department of Transportation, this project will reduce congestion for drivers on Interstate 405, a main artery for Seattle’s eastern suburbs,” Flatiron said in a statement. On top of the Main Street Bridge, more than 40 bridges also will be replaced, widened or undergo rehabilitation as part of the project. Plans have been developed to avoid completely replacing certain bridges, reducing cost and traffic impact on the busy 405 and surrounding roadways. Existing
bridges along project will be brought up to current seismic standards. The project also will be beneficial to area wildlife as well, with culverts being replaced with more environmentally beneficial fish passages. As part of the Renton to Bellevue project, the Washington State Department of Transportation identified the need for the demolition and replacement of the bridge to make room for the additional lanes on I-405. Once complete, the Renton to Bellevue project will add one new lane in each direction of I-405 between State Route 167 in Renton and Northeast Sixth Street in Bellevue. The I-405 express lanes, along with a few general-traffic exit lanes at clogged interchanges, are scheduled to be completed by late 2024, a WSDOT project description said. Aside from the Main Street Bridge demolition, key parts see BELLEVUE page 14
WSDOT photo
The I-405 express lanes, along with a few generaltraffic exit lanes at clogged interchanges, are scheduled to be completed by late 2024.