Seattle’s new Crosslake connection uses creative solutions to close a gap in the area’s transit system. If you live in ...

Trains pass over all types of bridges to get where they're going, including typical steel girder and truss bridges seen all across America, trestle bridges, and even viaducts (think the Hogwarts ...

Four more closures on the Montlake Lid, right before the 520 Floating Bridge going east, are set to occur between now and October, according to the Washington Department of Transportation (WSDOT). One ...

Yesterday afternoon at a school in Medina, the Washington State Department of Transportation and contractor Kiewit/General/Manson, A Joint Venture (KGM) unveiled the latest construction plans and ...

Sound Transit began light rail testing on the I-90 floating bridge in Seattle Wednesday. The unpowered car was pulled from the Mercer Island station to the Judkins Park station. Sound Transit says ...

Washington State Department of Transportation today announced a preferred alternative for how State Route 520 will be rebuilt, marking a major milestone in the environmental review process. The ...

Ever driven across the state Route 520 bridge and wondered how something that massive and made of that much concrete can float? At 1.5 miles long, the existing 520 Bridge between Seattle and Medina is ...

Structural Engineer: COWI Consulting Inc. A tied-arch bridge span floated a mile down the Ohio River in April 2021, marking the first time such a method had been used to install a West Virginia bridge ...