Long-term utility work on Dexter Avenue North and Harrison Street begins next week

Posted on Apr 25 2014 4:11 PM

SEATTLE – Drivers should get ready for a spring and summer of increasing construction near the intersection of Dexter Avenue North and Harrison Street. Next week, crews working for the Washington State Department of Transportation will begin relocating utilities along Dexter and Harrison as they prepare to build new on- and off-ramps to the State Route 99 tunnel. Work will shift one block north to Republican Street this summer.

Long-term construction impacts

Travelers in the area should be prepared for additional congestion and changing conditions beginning the week of April 28 and lasting through summer. Here’s what you can expect.


  • Dexter Avenue North will be narrowed to one lane in each direction between Thomas and Mercer streets.
  • Harrison Street will be closed between SR 99 and Eighth Avenue North.


Bicyclists and transit

  • A separate bicycle lane will be maintained on Dexter Avenue North during peak commute hours.
  • Depending on the work activity, signs may direct bicyclists to merge with traffic during off-peak hours.
  • King County Metro bus stops on Dexter near Harrison will be relocated to the south, near Thomas.


Nighttime and weekend closures of Dexter

In addition to the closures listed above, there will be nighttime and weekend closures of Dexter Avenue North between Republican and Thomas streets. Drivers and bicyclists will be detoured to Eighth Avenue North. The schedule through May 6 is listed below. Be sure to check our traffic page for updates beyond May 6.

  • Monday, April 28 through Friday, May 2
    • 8 p.m. – 5 a.m. nightly
  • Saturday, May 3 and Sunday, May 4
    • Around-the-clock
  • Monday, May 5 and Tuesday, May 6
    • 8 p.m. – 5 a.m. nightly


See map for current and future work zone.