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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: 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.
Sanitation infrastructure Completed in 2011 $1.8 billion [14] First billion-dollar tunnel in Seattle University Link tunnel: Transit tunnel Completed in 2012 $1.7 billion [15] Completed $200 million under budget. Central Link light rail service began in 2016. Interstate 5 HOV lanes in Tacoma and Fife Road expansion In progress $1.6 billion [16]
Seattle Public Utilities (SPU) is a public utility agency of the city of Seattle, Washington, which provides water, sewer, drainage and garbage services for 1.3 million people in King County, Washington. [3] The agency was established in 1997, consolidating the city's Water Department with other city functions. [4]
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.
Map of London sewer network, late 19th century. Sewerage (or sewage system) is the infrastructure that conveys sewage or surface runoff (stormwater, meltwater, rainwater) using sewers. It encompasses components such as receiving drains, manholes, pumping stations, storm overflows, and screening chambers of the combined sewer or sanitary sewer.
The location of the state of Washington in the United States of America Grand Coulee Dam has long been emblematic of infrastructure in the State of Washington, and is one of two dams mentioned in the official state folk song, Roll On, Columbia, Roll On". But its scale has been eclipsed by several 21st century infrastructure projects.
Communities surrounding Seattle dumped wastewater into Lake Washington, contaminating it as well. [2] In 1958, voters created the Municipality of Metropolitan Seattle (Metro) to address this problem. [3] Two treatment plants were planned, South Treatment Plant and the West Point Treatment Plant in Seattle. The plant broke ground in 1961, on ...
The Cedar River Watershed provides drinking water for 1.4 million people in the greater Seattle area. About two-thirds of King County uses water from the Cedar River Watershed, over 100 million US gallons (380,000 m 3) per day. The reservoirs and pipeline infrastructure is owned and operated by Seattle Public Utilities.