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WSDOT - Project - SR 99 - Tunnel Project
The central waterfront section of the SR 99 Alaskan Way Viaduct will be replaced with a bored tunnel beneath downtown Seattle. The tunnel will connect to the new SR 99 roadway south of downtown, and to Aurora Avenue in the north. The Federal Highway Administration (FHWA), WSDOT and the City of Seattle released the project's Final Environmental Impact Statement in July 2011, and FHWA signed the Record of Decision in August 2011. Seattle Tunnel Partners is the design-build contractor for the SR 99 tunnel. Design-build combines project design and construction in a single contract.
WSDOT - Project - SR 99 - S. Holgate Street to S. King Street Viaduct Replacement
March 2012 Cyclists and walkers now enjoy a brand new shared use path on the west side of East Marginal Way South between South Massachusetts and South Atlantic streets. Traffic is reduced to just one lane in each direction on East Marginal Way South in front of the U.S. Coast Guard station while crews continue rebuilding the road. Visit what's happening now for a snapshot of the latest construction and special event activity in the south end. The State Route 99 Alaskan Way Viaduct carries thousands of vehicles to and from downtown Seattle, two major stadiums and the Port of Seattle each day.
WSDOT - Project - SR 99 - Alaskan Way Viaduct Replacement
The viaduct's downtown waterfront section will be replaced with a bored tunnel beneath downtown Seattle. The tunnel will connect to the new SR 99 roadway south of downtown, and to Aurora Avenue in the north. The Federal Highway Administration (FHWA), WSDOT and the City of Seattle released the project's Final Environmental Impact Statement in July 2011, and FHWA signed the Record of Decision in August 2011. Initial construction activities began in fall 2011. SR 99 South Holgate Street to South King Street Project The southern mile of the Alaskan Way Viaduct , near Seattle's port and stadiums, is being replaced with a new roadway that has wider lanes, meets current earthquake standards and improves mobility for people and goods in the south of downtown area.
Alaskan Way Viaduct The Alaskan Way Viaduct section of State Route 99 has been a fixture of the downtown Seattle waterfront for almost six decades. Today, SR 99 continues to be a main north-south route through the city, carrying 20 to 25 percent of the traffic traveling through downtown.
WSDOT - About the Alaskan Way Viaduct and Seawall
WSDOT - SR 99 Tunnel Project - Safety features
Engineers are designing the SR 99 tunnel to withstand an earthquake, flooding or other disaster. The tunnel will also include state-of-the-art ventilation, fire detection and suppression, security and lighting systems. Geotechnical and structural engineers agree that tunnels can be designed as one of the safest places to be during an earthquake.
WSDOT - Alaskan Way Viaduct and Seawall Replacement - Library - Environmental Documents
The Final EIS is available at local libraries in Seattle. To request a free executive summary and CD or to purchase a printed copy for $50 (additional $75 for the appendices), call 206-805-2832 or email angovea@wsdot.wa.gov . top
WSDOT - Alaskan Way Viaduct and Seawall Replacement - Library - Environmental Documents
The Final EIS is available at local libraries in Seattle. To request a free executive summary and CD or to purchase a printed copy for $50 (additional $75 for the appendices), call 206-805-2832 or email angovea@wsdot.wa.gov . top
The Final EIS is available at local libraries in Seattle. To request a free executive summary and CD or to purchase a printed copy for $50 (additional $75 for the appendices), call 206-805-2832 or email angovea@wsdot.wa.gov . top
WSDOT - Alaskan Way Viaduct and Seawall Replacement - Library - Environmental Documents
The 2009 Legislature directed WSDOT to determine the potential for tolls to contribute no more than $400 million to construction funding for the SR 99 tunnel , and to analyze the impact of tolls on the performance of the tunnel. This tolling study (pdf 2.4 Mb) was released in January 2010. Additional traffic and tolling analysis is available in the project's Final Environmental Impact Statement . WSDOT and the City of Seattle established the Advisory Committee on Tolling and Traffic Management in fall 2011 to explore ways to refine SR 99 tunnel tolling strategies.
WSDOT - SR 99 Bored Tunnel Tolling Study
At least one inside lane on I-5 in the Smokey Point area will be closed nearly every weeknight for three weeks for work on the 156th Street NE overpass project. This week, except Friday, the southbound left-hand lane will be closed overnight for the project, located about a mile south of the interchange at I-5 and 172nd Street NE. The closures began Monday night.
Street Smarts - roads and traffic blog | HeraldNet.com - Everett and Snohomish County, Washington