SDOT crews will be closing two of the three southbound lanes and the far left northbound lane of the Viaduct from 6 p.m. tonight, Monday, March 8, to 5 a.m. tomorrow in preparation for building an overhead “sign bridge” that will span the width of southbound SR 99 and hold an electronic message board. Drivers should expect delays at Ward St. just north of the Battery St. Tunnel.
This work is part of the Intelligent Transportation Systems project. The Seattle Department of Transportation (SDOT) is working in partnership with the Washington State Department of Transportation (WSDOT) to bring more real-time traffic information to drivers on SR 99, and major routes leading to SR 99 in Seattle. The electronic message signs will provide drivers with traffic information such as construction closures, lane status and travel times. Six new electronic message signs will be installed on SR 99 from the First Avenue S. Bridge to N. 137th Street.
Installing real-time traffic information systems now will help keep Seattle moving during construction to replace the Alaskan Way Viaduct in the near future.
Crews will install the actual sign bridge in the spring.
For more information on the the SR 99 Intelligent Transportation Systems click here.