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Mercer Corridor Project (East Phase)
Weekly Construction Wrap-Up

Crews instal a framework for new signs.

Crews install a framework for new signs.


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

Activities this week included:

  • Began lane restrictions on Mercer Street and Broad Street:
    • Eastbound Mercer Street had the left lane restricted from just west of Dexter Avenue N to Ninth Avenue N on Friday, May 10 from approximately 8 a.m. to 4 p.m.
    • Westbound Mercer Street/Broad Street will have the left lane restricted from Westlake Avenue N to Harrison Street from 8 a.m. Thursday, May 9 until 3 p.m. on Friday, May 17.
    • Lane restrictions on Mercer and Broad streets will allow crews to rechannelize the roadway in preparation for reopening Broad Street to eastbound traffic on Monday, May 20th following the full weekend closure of SR 99 and Mercer for Mercer West construction.
  • Continued sewer work on Westlake Avenue N and Broad Street.
  • Continued Seattle City Light and communications duct bank work on Valley Street between Terry Avenue N and Westlake Avenue N.
  • Continued 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.
  • Continued traffic signal installations at the intersections of Dexter Avenue N and Republican , Broad and Harrison streets and signal modifications at Fifth Avenue N and Harrison Street.
  • Continued sidewalk removal and utility modifications on SR 99 between Roy and Harrison streets.

Traffic engineers will continue to:

  • Monitor traffic flow on Mercer Street and newly re-opened Fairview Ave. N.
  • Monitor traffic on Ninth Avenue N
  • 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.