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Freighter Fairpartner carrying the disassembled tunnel boring machine into the Port of Seattle in April 2013. Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and was the world's largest earth pressure balance tunnel boring machine, [14] at a cutterhead diameter of 57.5 feet (17.5 m) across.
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.
Four tunnel boring machines Maximum depth 400 feet (120 m) Part of $1.8 billion megaproject [5] [10] [11] [12] 2013–2018 Alaskan Way Viaduct replacement tunnel: 57 feet (17 m) 2 mi (3.2 km) $4.25 billion megaproject World's largest tunnel boring machine, 57.5 feet (17.5 m) in diameter [13] 2014–2016 Northgate Link tunnel: Twin 20 ft (6.1 m)
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No tunnel is worth a single person’s life.” Long hours and weekends, high expectations, and rigid deadlines are hallmarks of Elon Musk’s companies: Tesla, SpaceX, and X, formerly Twitter.
Beacon Hill tunnel is a public transit tunnel in Seattle, Washington, carrying light rail trains on the 1 Line under Seattle's Beacon Hill between Rainier Valley and SoDo just east of Interstate 5. [1] The Beacon Hill Link Light Rail station is approximately 160 feet (49 m) underground near the midpoint of the tunnel.
Each 3.4-mile (5.5 km) tunnel is dug southbound, starting from the Maple Leaf Portal, in three segments separated by stations, using a 21.5-foot (6.6 m) diameter tunnel boring machine. The machine digging the tunnel for northbound trains was named "Brenda" and the sister machine for the southbound trains was named "Pamela", but the names were ...
Seattle has finally started tossing people in jail for low-level crimes again after four years of letting shoplifters, vandals and other petty criminals walk free.