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Mercer Corridor Project – Weekly Construction Preview

This week, crews will continue to work on underground utilities on Valley Street, Broad Street and Westlake Avenue N north of Mercer Street and signal installations at Dexter Avenue N, Broad Street and Fifth Avenue N.

 Activities this week include:

  • Removal of a temporary traffic camera on westbound Mercer Street on Monday, May 13.  The camera will be used in a different location. The left lane of westbound Mercer Street between Fairview Avenue N and Boren Avenue N will be restricted between 9 and 11 a.m. while crews perform the work.
  • Continue Seattle City Light and communications duct bank work on Valley Street between Terry Avenue N and Westlake Avenue N.
  • Continue landscaping installation on Fairview Avenue N between Valley Street and Mercer Street and on the south side of the I-5 on-ramps at Mercer Street.
  • Continue work on Broad Street in preparation for re-opening the roadway to eastbound traffic on May 20.Traffic impacts include:
    • Westbound Mercer Street/Broad Street will have a single lane restricted from Westlake Avenue N to Harrison Street from Thursday, May 9 until Friday, May 17.
  • Continue traffic signal installations at the intersections of Dexter Avenue N and Republican Street, Broad and Harrison Street and signal modifications at Fifth Avenue N and Harrison Street.
  • Continue sidewalk removal and utility modifications on SR 99 between Roy and Harrison Streets.

Reminder: Beginning Friday, May 17 at 11 p.m. through Monday, May 20, at 5 a.m., SR 99 and Mercer Street will be fully closed to traffic as crews begin major construction for Mercer West. More information regarding traffic impacts, including lane reductions on Mercer Street between Fourth Avenue N and Ninth Avenue N beginning May 20, can be found at:

Traffic engineers will continue to:

  • Monitor traffic on Mercer Street and on Fairview Avenue N.
  • Monitor traffic at the Westlake Avenue N and Mercer Street intersection.
  • Monitor traffic flow at the Dexter Avenue N and Mercer Street intersection.

For up-to-minute construction updates join our project email list at:  or call the 24-hour construction hotline at 206-419-5818.