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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.
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.
First use of Earth Pressure Balance Machine in Seattle [1] 1987–1988 Downtown Seattle Transit Tunnel: Twin 21.25 ft (6.48 m) 13,624 ft (4,153 m) Tunnelling shield First use of waterproofing PVC membrane in USA [1] 1990 Fort Lawton Tunnel/West Point Sewer 15.5 ft (4.7 m) O.D. 8,400 feet (2,600 m) Partial Earth Pressure Balance Machine [1] [5] 1993
A Downtown Seattle bus stop on Pine Street with a sign for the Magic Carpet zone, 1975. For almost 40 years, until 2012, [22] most of downtown Seattle was designated as a zero-fare zone, an area in which all rides on Metro vehicles were free, known as the "Ride Free" Area. Intended to encourage transit usage, improve accessibility and encourage ...
Metro Transit began planning a bus-based transit system through downtown Seattle in the 1970s, including a transit mall, tunnel, or bus terminal in the Westlake area. [19] [20] Metro approved construction of a downtown bus tunnel in 1983, [21] selecting Pine Street and 4th Avenue as the site of one of the stations. [22]
Metro Transit began planning a bus tunnel through downtown Seattle in the 1970s, to be eventually converted to use by light rail trains. Metro approved the construction of a bus tunnel under 3rd Avenue in 1983, [20] and chose the intersection of 3rd Avenue and University Street as the site of one of the tunnel's five stations. [21]
King County Metro is the public transit authority of King County, Washington, including the city of Seattle in the Puget Sound region. It operates a fleet of 1,396 buses, serving 115 million rides at over 8,000 bus stops in 2012, making it the eighth-largest transit agency in the United States .
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 ...