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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.
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]
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]
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.
Map 839, Seattle Municipal Archives.: Date: 1894; Flickr upload 2009-07-29 14:29: Source: Seattle sewer districts, 1890. Uploaded by Jmabel; Author: Seattle City Engineering Dep't. Uploaded by Seattle Municipal Archives from Seattl
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.
The Census Bureau adopted metropolitan districts in the 1910 census to create a standard definition for urban areas with industrial activity around a central city. [11] At the time, Seattle had the 22nd largest metropolitan district population at 239,269 people, a 195.8 percent increase from the population of the equivalent area in the 1900 census. [12]