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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.
High-occupancy toll lanes on I-405 from Bellevue to Lynnwood; State Route 99 tunnel on SR 99 in Seattle; Tolls on all highways except the Tacoma Narrows Bridge are variable, depending on the time of day. For HOT lane systems (also known as express toll lanes), tolls are set within a minimum and maximum value, and vary based on current traffic ...
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 tunnel portal includes ramps to and from nearby streets, including Dearborn Street, Alaskan Way, and a frontage road along the east side of the highway. [14] The tunnel travels 1.8 miles (2.9 km) under Downtown Seattle and carries SR 99 along the central waterfront, running roughly parallel to the former Alaskan Way Viaduct.
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
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 ...
The five projects under this initiative are: Golden Gate Bridge in San Francisco, [109] State Route 520 serving downtown Seattle and communities to its east, [110] Interstate 95 between Miami and Ft. Lauderdale, [111] Interstate 35W serving downtown Minneapolis, [112] and a variable rate parking meter system in Chicago, which replaced New York ...