Washington State Department of Transportation
Travelers should plan ahead for closures on SR 99/Aurora Avenue North between the south end of the Battery Street Tunnel and Valley Street this weekend, May 8-10. The Alaskan Way Viaduct will remain open during this time.
During the closures, crews will connect a new water main under the highway near Harrison Street – a critical step toward building the on- and off-ramp connections for the SR 99 tunnel’s future north portal. Seattle City Light crews will also take advantage of the closure to remove overhead power lines.
SR 99/Aurora Avenue North closed between the south end of the Battery Street Tunnel and Valley Street
- Southbound lanes
- Closed from 10 p.m. Friday, May 8 to 5 a.m. Sunday, May 10
- At least one lane will temporarily reopen from 3 – 10:30 p.m. Saturday, May 9
- Northbound lanes
- Closed from 11 p.m. Friday, May 8 to 5 a.m. Sunday, May 10
- Both lanes will temporarily reopen from 8:30 – 10:30 p.m. Saturday, May 9