T-39 Project Updates

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T-39 Project Update Flyer Links:

Project Update Flyer - April 18, 2019


Project Update for October 8, 2019

ROAD CLOSURE - October 10th thru 11th, 2019
Starting on Thursday, October 10th, at 9:00 PM, SR 169 will be closed in both directions from Witte Road SE to SE 240th Street until Friday, October 11th at 5:00 AM for grinding and lane striping improvements. Please follow the marked detour route.

If you have any questions, please contact the Public Works & Community Development Director, Tawni Dalziel, P.E., at tawni.dalziel@maplevalleywa.gov and/or 425-413-8800.

T-39 Project RD Close - 101019

October 4, 2019 Update:

  • The soldier pile wall concrete work has been completed. Minor touchup and pigment sealer will follow.  A fence will be installed on top.
  • Highmark Construction has placed the sidewalk along the south section (225th to 240th).
  • Totem Electric is installing conduit and foundations for the street lights along the north portion of the project.
  • Highmark Construction will place curb and gutter along the wall section (Witte to 225th).
  • Totem Electric and Highmark are working on the intersection improvements at SE 240th in preparation for the new signal pole due to arrive later this month.
  • Asphalt will be placed along the new curb section later this month, weather permitting.
  • No changes to the current traffic control is anticipated for a while.


August 30, 2019 Update:

  • The soldier pile wall construction continues along the north portion of the project.
  • The iron workers have installed all the rebar and nelson studs to support the concrete fascia to cover the wood lagging
  • Highmark Construction have over 50% of the concrete fascia panels placed.
  • Totem Electric has installed conduit and foundations for the street lights along the south portion of the project.
  • Highmark Construction completed the curb, gutter, and sidewalk placement along the south portion.
  • No changes to the current traffic control is anticipated for a while.


August 5, 2019 Update:

  • The soldier pile wall construction continues along the north portion of the project,
  • Installation of rebar, nelson studs and the drainage matt continues along the steel piles and wooden lagging which will support the concrete fascia which will cover the wood lagging,
  • Highmark Construction is building the fascia panels and have placed 6 of the 39 panels to date,
  • Totem Electric has installed conduit and foundations for the street lights along the south portion of the project,
  • Highmark Construction has installed curb and gutter placement along the south portion,
  • No changes to the current traffic control are anticipated for a while.


July 19, 2019 Update:

  • The soldier pile wall construction continues along the north portion of the project. DMI a subcontractor to Johansen has completed all of the 122 drilled piles and all of the wood lagging.
  • The iron workers are installing rebar and nelson studs to the steel piles to support the concrete fascia to cover the wood lagging.
  • Highmark Construction is building the fascia panels and will begin the first concrete pour next week.
  • Totem Electric will begin installing conduit and foundations for the street lights along the south portion of the project.
  • Highmark Construction will be onsite soon to begin curb and gutter placement along the south portion.
  • No changes to the current traffic control is anticipated for a while.


June 24, 2019 Update:

  • The soldier pile wall construction continues along the north portion of the project.  DMI a subcontractor to Johansen is onsite and have completed approximately 92 of the 122 drilled piles.
  • Wood lagging between the piles has been installed and will continue until all of the piles are completed.
  • Soon the Fascia work will begin with steel placement and forms for the permanent concrete wall.
  • Stormwater pipe and catch basins have been installed in several areas.
  • Highmark Construction a subcontractor to Johansen will be onsite next month to begin curb and gutter placement.
  • No changes to the current traffic control is anticipated for a while.


May 24, 2019 Update:

  • Stormwater infiltration system has been installed and covered.
  • The soldier pile wall construction has begun along the north portion of the project.  DMI a subcontractor to Johansen is onsite and have completed approximately 17 of the 122 drilled piles.
  • Soon work will start on placing wood lagging between the piles.
  • No changes to the current traffic control is anticipated for a while.


May 10, 2019 Update:

  • Johansen Construction Co. has installed concrete barriers along the work zone, striping has been completed to allow 2 lanes of traffic southbound and 1 lane northbound
  • Clearing activities are complete and the bench for the wall has been graded
  • Steel for the wall is at the fabricator and will arrive the week of May 20th
  • Stormwater construction is underway with the installation of an infiltration gallery
  • Night work will be occurring on Monday, May 13th and Tuesday, May 14th, 9 p.m. until 4 a.m., on SR 169 between Witte RD and SE 225th.  The road will be reduced to 1 lane of alternating traffic.  Centrylink will be abandoning a telephone line in an underground vault in the road for the T-39 project.