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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.
In Seattle, the highway is known as East Marginal Way and Aurora Avenue North; in Everett, it uses Evergreen Way and Everett Mall Way. [225] [226] A four-block section of former SR 99 between Denny Way and the new tunnel portal was renamed to 7th Avenue North and Borealis Avenue in early 2019 as part of the reconfiguration of Aurora Avenue. [227]
The Alaskan Way Viaduct ("the viaduct" for short) [1] [2] [3] was an elevated freeway in Seattle, Washington, United States, that carried a section of State Route 99 (SR 99). The double-decked freeway ran north–south along the city's waterfront for 2.2 miles (3.5 km), east of Alaskan Way and Elliott Bay, and traveled between the West Seattle Freeway in SoDo and the Battery Street Tunnel in ...
This is a list of tunnels built in the city of Seattle, in the U.S. state of Washington. The Puget Sound region , where Seattle lies, has a history of glaciation that has left many hills and ridges that civil engineers have needed to traverse for transportation and utilities. [ 1 ]
It is mostly a surface-level highway with the exception of the SR 99 Tunnel through downtown Seattle. The tunnel was created to replace the Alaskan Way Viaduct, which was torn down in 2019. A 4-mile section of the old US 99 through unincorporated Hazel Dell and Salmon Creek, north of Vancouver, Washington is still known as NE Highway 99.
Eysturoy Tunnel, which opened in 2020, took four years to complete. It dramatically cut the travel time between the Faroe Islands capital on the island of Streymoy and neighboring Eysturoy island.
Twelve bridges have been granted historical status by the city, federal government, or both. Seattle also has some of the only permanent floating pontoon bridges in the world. [2] Original crossings over Seattle's mudflats were typically supported by timber piles. Lake Washington and Puget Sound are to the east and west of the city, respectively.
Work has started on another Highway 99 widening — nine miles of southbound lanes between the Turlock and Livingston areas. The project will add a third lane from the Stanislaus/Merced county ...