The Washington State Department of Transportation first shared the collision at 6 a.m., soon adding that the right three lanes of westbound I-90, east of the Mt. Baker Tunnel in Seattle ...

An curved arrow pointing right. When Seattle decided to put in a new highway tunnel beneath the city, a machine was specially built to dig the 2-mile long, 57-foot wide project. The 6,700 ton ...

Drivers in King County will encounter temporary lane shutdowns this weekend at five spots, the busiest of which will be southbound Interstate 5 approaching downtown Seattle.

A portion of Seattle's Alaskan Way Viaduct is being replaced by a deep tunnel, and the machine purpose-built for the job is the world's largest tunnel boring machine (TBM), christened "Bertha." ...

Glacier Northwest also said its soil handling took place outside WSDOT’s tunneling site, and its role was to fulfill its $28.3 million contract with private Seattle Tunnel Partners firms ...

Washington State Department of Transportation will implement a toll as drivers make their way through the tunnel... The second phase of the Seattle Squeeze is winding down but that doesn’t mean ...