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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.
In Seattle, the highway is known as East Marginal Way and Aurora Avenue North; in Everett, it uses Evergreen Way and Everett Mall Way. [225] [226] A four-block section of former SR 99 between Denny Way and the new tunnel portal was renamed to 7th Avenue North and Borealis Avenue in early 2019 as part of the reconfiguration of Aurora Avenue. [227]
The Alaskan Way Viaduct ("the viaduct" for short) [1] [2] [3] was an elevated freeway in Seattle, Washington, United States, that carried a section of State Route 99 (SR 99). The double-decked freeway ran north–south along the city's waterfront for 2.2 miles (3.5 km), east of Alaskan Way and Elliott Bay, and traveled between the West Seattle Freeway in SoDo and the Battery Street Tunnel in ...
Renton Sewer Tunnel ETS-4B 12 ft (3.7 m) O.D. 620 ft (190 m) Drill and shoot [1] 1986 Renton Sewer Tunnel ETS-5 12 ft (3.7 m) O.D. 1,820 ft (550 m) Drill and shoot [1] 1986 Renton Sewer Tunnel ETS-6 12 ft (3.7 m) O.D. 1,056 ft (322 m) First use of Earth Pressure Balance Machine in Seattle [1] 1987–1988 Downtown Seattle Transit Tunnel
The SR 99 Tunnel is a 2-mile (3.2 km) bored double-decker highway tunnel carrying a section of State Route 99 (SR 99) under Downtown Seattle from SoDo in the south to South Lake Union in the north. Since the 2001 Nisqually earthquake , the replacement of the Alaskan Way Viaduct has been the source of much political controversy demonstrating the ...
It is mostly a surface-level highway with the exception of the SR 99 Tunnel through downtown Seattle. The tunnel was created to replace the Alaskan Way Viaduct, which was torn down in 2019. A 4-mile section of the old US 99 through unincorporated Hazel Dell and Salmon Creek, north of Vancouver, Washington is still known as NE Highway 99.
Battery Street Tunnel, State Route 99, Seattle (closed and filled in 2019) Beacon Hill tunnel, Link light rail, Seattle; Burwell Tunnel, Bremerton Ferry Terminal to westbound State Route 304, Bremerton; Cascade Tunnel, BNSF Railway, near Stevens Pass; Downtown Seattle Transit Tunnel, Link light rail (and formerly buses), Downtown Seattle
East Side Highway Tunnel 1939 1992 SR 123 ... Seattle: King: WA-184: Alaskan ... WA-184: Alaskan Way Viaduct and Battery Street Tunnel 1966 2008 SR 99: Battery Street ...