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 August 14

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

Construction activities

  • Work will occur in the Marion Street and Western Avenue intersection, including pavement breaking, sawcutting, sidewalk removal, ADA ramp installation, grinding, concrete pouring, and asphalt paving.
  • An ADA ramp will be repaired on the northeast corner of Yesler Way and Western Avenue.
  • Sidewalk repair will occur near Columbia Street and Western Avenue.
  • Expect increased noise, vibration, and dust.
  • 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 closed near intersections for pedestrian safety. Pedestrian detours will be clearly marked.
  • The pedestrian staircase to the Marion Street pedestrian bridge on the southwest corner of Marion Street and Western Avenue will be closed during intersection work.
  • Traffic will merge into one lane on Madison and Marion streets around work zones.
  • One southbound lane 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.

See construction update and map


Ross Hathaway, project manager
(206) 733-9132