SODO overpass work will close State Route 99 on weeknights for next three weeks

Posted on Jan 14 2013 9:18 AM

Construction on a new overpass near Seattle’s stadiums will require some State Route 99 drivers to change their overnight travel plans. 

Crews will close southbound State Route 99 through downtown Seattle and the left lane of northbound SR 99 through SODO, Monday through Thursday nights, for the next three weeks.

During the closures crews will continue building a temporary structure to support construction of the South Atlantic Street overpass.  

Three weeks of SR 99 closures: Jan. 14-17, Jan. 21-24 and Jan. 28-31

  • Crews will close all lanes of southbound SR 99 between the Battery Street Tunnel and Spokane Street Bridge, from 10 p.m. to 5 a.m., Monday through Thursday nights.


  • Crews will close the left lane of northbound SR 99 from South Holgate Street to South Royal Brougham Way from 9 p.m. to 5 a.m., Monday through Thursday nights.


Drivers making southbound trips on closure nights should map out alternate routes and plan for delays and congestion in and near downtown Seattle. Drivers can check traffic conditions before they leave at Up-to-the-minute traffic information is also available via the voice-activated, 511 driver information line.

The South Atlantic Street overpass is part of the Alaskan Way Viaduct Replacement Program. It will help move freight and daily commuters faster by eliminating long waits for trains at the rail crossing in front of the Port of Seattle terminal on South Atlantic Street.  Construction on the overpass started last summer and is scheduled for completion by the end of 2013.