The Alaskan Way Viaduct replacement tunnel is a bored road tunnel that is under construction in the city of Seattle in the U.S. state of Washington. In the U.S. state of Washington.
Oct. 7 project update: New video shows Bertha repair effort. Posted on Oct 7 2015 10:38 AM. Work continues at the bottom of the 120-foot-deep pit where Seattle Tunnel Partners is readying Bertha, the SR 99 tunneling machine, for the rest of her tunnel drive beneath downtown Seattle. Plan ahead: Semiannual viaduct inspection closure set for Halloween weekend. Posted on Oct 1 2015 1:52 PM. October is here, which means the semiannual inspection closure of the Alaskan Way Viaduct is just around the corner. Both directions of SR 99 will be closed between South Spokane Street and the north end of the Battery Street Tunnel from 6 a.m. to 6 p.m. on both Saturday, Oct. 31 and Sunday, Nov. 1 On January 12, 2009, the state of Washington, King County, the city of Seattle, and the Port of Seattle revealed that they had agreed to replace the viaduct with a four-lane, 2-mile (3.2 km) long underground tunnel. The 2001 Nisqually earthquake damaged the viaduct and its supporting Alaskan Way Seawall and required the Washington State Department of Transportation (WSDOT) to invest US$14.5 million in emergency repairs. Experts give a 1-in-20 chance that the viaduct could be shut down by an earthquake within the next decade. SEATTLE — Washington Department of Transportation officials say they will close the Alaskan Way Viaduct when they start tunneling underneath it. The closure could last up to two weeks. About 110,000 cars and trucks drive the viaduct through downtown Seattle every day. WSDOT closed the viaduct for a week in 2011. They say part of the reason they’re going to do it again is because it worked out then. This time, t The Alaskan Way Viaduct is an elevated highway in Seattle, Washington built in three phases from 1949 through 1953 and opened on April 4, 1953. It features a double-decked elevated section of State Route 99 that runs along the Elliott Bay waterfront in the industrial district and downtown of Seattle. The 2001 Nisqually earthquake damaged the viaduct and its supporting Alaskan Way Seawall and required the Washington State Department of Transportation (WSDOT) to invest US$14.5 million in emergency repairs. Experts give a 1-in-20 chance that the viaduct could be shut down by an earthquake within the next decade. The Alaskan Way Viaduct replacement tunnel is a bored road tunnel that is under construction in the city of Seattle in the U.S. state of Washington. The project has been stalled since December 2013. No firm date for if/when the project will continue has been set. On January 12, 2009, the state of Washington, King County, the city of Seattle, and the Port of Seattle revealed that they had agreed to replace the viaduct with a bored underground tunnel. The Alaskan Way Viaduct, completed on April 4, 1953, is a double-decked elevated section of State Route 99 (SR 99) that runs along the Elliott Bay waterfront in the Industrial District and Downtown of Seattle. On January 12, 2009, the state of Washington, King County, the city of Seattle, and the Port of Seattle revealed that they had agreed to replace the viaduct with a bored underground tunnel. Building a new State Route 99 through Seattle. The Alaskan Way Viaduct, an elevated section of State Route 99 in Seattle, was built in the 1950s, and decades of daily wear and tear have taken their toll on the structure. Because of the viaduct’s age and vulnerability to earthquakes, replacing it is critical to public safety. The Alaskan Way Viaduct Replacement Program includes projects led by the Washington State Department of Transportation, King County, the City of Seattle and the Port of Seattle. Waterfront Seattle. Waterfront Seattle is a multi-year program to rebuild Seattle’s waterfront following the removal of the Alaskan Way Viaduct.  Half of the viaduct is already gone, demolished and replaced by crews at the south end of downtown, near Seattle’s stadiums. Completed on budget and one year ahead of schedule, this new section of SR 99 connects to the remaining viaduct along the waterfront to keep SR 99 traffic moving until the tunnel opens to traffic. The Alaskan Way Viaduct Replacement Program includes projects led by the Washington State Department of Transportation, King County, the City of Seattle and the Port of Seattle.
http://www.wsdot.wa.gov/Projects/Viaduct/ https://en.wikipedia.org/wiki/Alaskan_Way_Viaduct http://q13fox.com/2013/09/16/viaduct-will-close-when-bertha-tunnels-underneath/ https://en.wikipedia.org/wiki/Alaskan_Way_Viaduct https://en.wikipedia.org/wiki/Alaskan_Way_Viaduct_replacement_tunnel https://en.wikipedia.org/wiki/Alaskan_Way_Viaduct_replacement_tunnel http://www.wsdot.wa.gov/Projects/Viaduct/About http://waterfrontseattle.org/ http://www.wsdot.wa.gov/Projects/Viaduct/About
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