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- Die Mount Baker Ridge Tunnel oder Mount Baker Tunnel liegen im US-Bundesstaat Washington und führen die Interstate 90 unter dem Mount Baker Stadtviertel von Seattle hindurch. Die Anlage besteht aus drei Tunnelröhren: die ersten beiden wurden 1940 zusammen mit der Lake Washington Floating Bridge eröffnet, die dritte 1991. Die Tunnel unterführen acht Fahrstreifen der Autobahn, sowie einen Fuß- und Radweg, der in der dritten Tunnelröhre über den Fahrbahnen der Interstate geführt wird. Die Tunnel wurden 1982 in das National Register of Historic Places (# 82004243) aufgenommen. Die American Society of Civil Engineers (ASCE) zeichnete das Bauprojekt 1990 mit dem Outstanding Civil Engineering Achievement Award aus und listet die Ostportale zusammen mit der Lake Washington Floating Bridge seit 2008 als Historic Civil Engineering Landmark. Weiterhin sind die Tunnel ein Seattle Landmark. (de)
- The Mount Baker Tunnel or Mount Baker Ridge Tunnel carries Interstate 90 under the Mount Baker neighborhood of Seattle, Washington. It is actually a group of three tunnels that carry eight lanes of freeway traffic, plus a separate path for bicycles and pedestrians. The two originals are twin tunnel bores completed in 1940 and rehabilitated in 1993. The newest tunnel was built north of the original tunnels and opened in June 1989. The tunnel has a double-decked roadway with the bicycle/pedestrian path above the traffic lanes. The tunnel was listed on the National Register of Historic Places in 1982 (ID #82004243). The east portals of the tunnel, with murals titled Portal of the North Pacific designed by artist James FitzGerald, along with the Lacey V. Murrow Bridge, are an official City of Seattle landmark. The official length is 1,440 feet (440 m), though the perceived length while driving is closer to 3,300 feet (1,000 m) because of a cut-and-cover "lid" between the western portal and the beginning of the actual tunnel under the Mount Baker ridge. The former west portal, now located well inside the tunnel, is no longer discernible and its two arch structures were removed during 1989–1993 modification work. The eastern end of the tunnel links to the Lacey V. Murrow Memorial Bridge and the Homer M. Hadley Memorial Bridge (collectively the I-90 floating bridge) on Lake Washington, to Mercer Island. At 63 feet (19 m) in diameter, it is the world's largest diameter soft earth tunnel, having been bored through clay. (en)
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- 15738 (xsd:nonNegativeInteger)
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- 1940-01-01 (xsd:gYear)
- 1989-01-01 (xsd:gYear)
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- Bates & Rogers Construction Corp. (en)
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- View of the Mount Baker Tunnel and the Lacey V. Murrow and Homer M. Hadley Memorial Bridges from the southwest (en)
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- , Seattle, Washington (en)
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- Historic Bridges/Tunnels in Washington State TR (en)
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- Mount Baker Ridge Tunnel (en)
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- Mount Baker Ridge Tunnel, Interstate 90, passing under Mount Baker Ridge, Seattle, King County, WA (en)
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- Die Mount Baker Ridge Tunnel oder Mount Baker Tunnel liegen im US-Bundesstaat Washington und führen die Interstate 90 unter dem Mount Baker Stadtviertel von Seattle hindurch. Die Anlage besteht aus drei Tunnelröhren: die ersten beiden wurden 1940 zusammen mit der Lake Washington Floating Bridge eröffnet, die dritte 1991. Die Tunnel unterführen acht Fahrstreifen der Autobahn, sowie einen Fuß- und Radweg, der in der dritten Tunnelröhre über den Fahrbahnen der Interstate geführt wird. (de)
- The Mount Baker Tunnel or Mount Baker Ridge Tunnel carries Interstate 90 under the Mount Baker neighborhood of Seattle, Washington. It is actually a group of three tunnels that carry eight lanes of freeway traffic, plus a separate path for bicycles and pedestrians. The two originals are twin tunnel bores completed in 1940 and rehabilitated in 1993. The newest tunnel was built north of the original tunnels and opened in June 1989. The tunnel has a double-decked roadway with the bicycle/pedestrian path above the traffic lanes. (en)
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- Mount Baker Ridge Tunnel (de)
- Mount Baker Tunnel (en)
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- Mount Baker Ridge Tunnel (en)
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