SR 99/Aurora Avenue North closures near South Lake Union this weekend

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