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The State Route 99 tunnel, also known as the Alaskan Way Viaduct replacement tunnel, is a bored highway tunnel in the city of Seattle, Washington, United States.The 2-mile (3.2 km), double-decker tunnel carries a section of State Route 99 (SR 99) under Downtown Seattle from SoDo in the south to South Lake Union in the north.
Freighter Fairpartner carrying the disassembled tunnel boring machine into the Port of Seattle in April 2013. Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and was the world's largest earth pressure balance tunnel boring machine, [14] at a cutterhead diameter of 57.5 feet (17.5 m) across.
The Downtown Seattle Transit Tunnel (DSTT), also referred to as the Metro Bus Tunnel, is a 1.3-mile-long (2.1 km) pair of public transit tunnels in Seattle, Washington, United States. The double-track tunnel and its four stations serve Link light rail trains on the 1 Line as it travels through Downtown Seattle.
Seattle Public Utilities held a public naming contest for its latest massive piece of machinery — a tunnel boring machine that will be used to build a storage space for the Ship Canal Water ...
SEATTLE (AP) — A major thoroughfare for commuters along downtown Seattle's waterfront is set to shut down for good Friday, ushering in what officials say will be one of the most painful traffic ...
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This is a list of tunnels built in the city of Seattle, in the U.S. state of Washington.. The Puget Sound region, where Seattle lies, has a history of glaciation that has left many hills and ridges that civil engineers have needed to traverse for transportation and utilities. [1]
This project totals $5.2 million, or less than 1% of the total $806 million funded for the Waterfront Park project, which is funded through a combination of public and private investments, with ...