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Mercer madness begins this weekend

May 15th, 2013 by Laura

As part of the West Phase of the Mercer Corridor Project, a large portion of Aurora/99 and part of Mercer Street will be closed starting 11pm Friday, May 17 through 5am Monday, May 20. Then, beginning Monday, travel along and around Mercer will change. Expect “significant delays” for the weekend,and “major” Mercer and Aurora/99 impacts beyond the weekend.

The run-down on the closure and the aftermath are as follows from SDOT:

Mercer 99 ClosureWeekend closure:

  • Aurora/99 will be fully closed between Valley St and the southern end of the Battery St Tunnel
  • Traffic traveling through Seattle via SR 99 will be directed to I-5 north of Seattle at 85th Street or south of Seattle at E Marginal Way
  • Mercer Street will be fully closed to traffic between 5th Ave N and Dexter Ave N
  • Traffic heading east towards I-5 will be detoured to Denny Way at 5th Ave N and will reconnect to Mercer Street at Dexter Avenue N to continue east
  • Sidewalks will be closed on both sides of SR 99 between Thomas and Valley Streets and on the south side of Mercer between 5th Ave N and Dexter Ave N

Beginning Monday, May 20:

  • Lane restrictions on Mercer will remain in place between 4th Ave N and 9th Ave N an alternate route for travelers heading to I-5
  • Broad Street re-opens to eastbound traffic as an alternate route to I5
  • Signal modifications at the intersections of 5th Ave N and Harrison St and Harrison St and Broad St will allow southbound 5th Ave N traffic to connect to eastbound Broad Street
  • Due to the re-opening of Broad Street to two-way traffic, left turns from eastbound and westbound Mercer onto 9th Ave N will be restricted to facilitate traffic flow on Mercer. Travelers heading north towards Westlake and Fremont should use Dexter Avenue N to reach their destinations.

Mercer West: 5th Ave W to Dexter Ave N - Access to Northbound 99 During Construction

5th Ave W to Dexter - 99

Mercer West: 5th Ave W to Dexter Ave N - Access to I5 During Construction

5th Ave W to Dexter - I5

Additional traffic revisions will include:

  • Mercer will be reduced to two eastbound lanes between 4th Ave N and 9th Ave N
  • Local access will be maintained at Taylor Avenue N
  • The sidewalk on the north side of Mercer will be closed between 5th Ave N and Dexter Ave N. The sidewalk on the south side of Mercer Street will remain open
  • Aurora/99 traffic will be shifted to the west side of the roadway between Valley and Harrison streets; two lanes of SR 99 in each direction will remain open
  • Northbound 99 off-ramp to Mercer will be permanently closed. A new signalized intersection at Republican Street and Dexter Avenue N will be available for northbound SR 99 traffic to reach South Lake Union

Tags: Planning & Construction · Traffic