Seattle Public Utilities Mami Hara, General Manager/CEO

Western Avenue Roadway Restoration for Emergency Water Main Replacement

  • Western Ave New Pipe The water main construction was completed in 2016. Now SPU is permanently restoring the roadway.
  • Western Ave New Pipe The roadway is temporarily restored in March 2016.
  • WesternAve The new Western Ave water main will sustain additional ground settlement and be seismically sound.

What & Why

Seattle Public Utilities (SPU) installed a new water main along Western Avenue from Yesler Way to Spring Street in the Pioneer Square neighborhood in 2016. After replacing the water main, the roadway was temporarily restored. The new, 24-inch steel water main is able to absorb additional ground settlement and withstand seismic activity.

What's happening now?

Project update October 9

Construction work to restore parts of Western Avenue is underway. Construction is anticipated to be complete this fall.

Construction activities

  • ADA ramp work will occur on the southwest corner of Marion Street and Western Avenue. The staircase to the Marion Street pedestrian bridge will remain closed this week while this work occurs.
  • The contractor will be pouring concrete for new sidewalks on the northeast corner of Madison Street and Western Avenue and will complete base paving in the right of way in the northwest corner of the intersection.
  • Increased noise, vibration, and dust are expected.
  • Current weekday work hours are 6 a.m. to 4 p.m. with possible future night and weekend work.

Access and parking

  • On-street parking will be restricted in work zones.
  • Sidewalks will be restricted near intersections for pedestrian safety. Pedestrian detours will be clearly marked.
  • Traffic on Marion Street and Madison Street will be merged into one lane around work zones.
  • One southbound lane on Western Avenue will be open with some intermittent restrictions to safely accommodate work. Uniformed police officers will be on-site during work hours to help direct traffic and pedestrians.
  • Business and pedestrian access will be maintained at all times.


Ross Hathaway, project manager
(206) 733-9132