Work to disrupt 23rd Ave

The Seattle Department of Transportation expects contractors to begin construction in May on 23rd Avenue South between South Jackson Street and Rainier Ave South. This stretch represents the second phase of construction on the 23rd Avenue corridor, and is expected to take about a year.

A pre-construction open house will be 6:30-8:30 p.m., Wednesday, April 18, in the TM Cafeteria. Hear what to expect during construction, schedules, detours and coordination with other nearby projects. Info:

The first phase of the 23rd Avenue project, between Jackson and East John Streets, was completed last spring. The work is intended to improve safety and mobility for people who drive, walk, and take transit. Below is information from an SDOT news release….

Improvements include:

  • Replacing the water main under the street between S Jackson St and S Norman St
  • Replacing water service pipes and fire hydrants from S Norman St to Rainier Ave  S.
  • Redesigning the street from four lanes to three from S Jackson St to S Holgate St
  • Sidewalk improvements and curb ramps
  • Repaving the street
  • New storm drains
  • Landscaping and street trees
  • Transit improvements
  • Pedestrian and safety improvements at the Rainier Ave S, S Hill St, and 23rd Ave S intersection


During construction, expect:

  • Southbound 23rd Ave S between S Jackson St and S Norman St will be detoured to Martin Luther King Jr Way S
  • Multiple, short-term driveway closures and sidewalk detours
  • Short-term side street closures and temporary loss of parking on side streets
  • Some night time work
  • Typical construction impacts like noise, dust, and vibrations
  • Temporary water shutdowns for some customers; advance notice will be provided

King County Metro Routes 4 and 48 will move from 23rd Ave S to Martin Luther King Jr Way S during construction. Both routes will provide the same level of service as they do today. For more information about Metro bus service during construction, please contact 206-553-3000 or visit

For more information

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