Public Works Projects

Current Arlington Public Works Projects

The 2021 Public Works Improvement Projects include projects at multiple locations in Arlington. These projects are currently in design, bidding, pre-construction or construction phase.  The benefits of these projects include the upgrading of utilities to improve service and support new development; improving highways, arterials, and neighborhood streets; and addressing safety issues. To get information on specific projects please click on the links to the left to bring up the project page. 

2021 Public Works Project Flyer

  • Manhole Cover and Valve Adjustments: Water valves, sewer, and stormwater manhole covers across Arlington will be adjusted to better match the grade of the surrounding roadway.

Arlington Public Works projects aerial & 360° imagery Opens in new window 

Traffic and Project Updates

  • 204th Street Roundabout:

    • January 19 - Over the next two weeks the traffic control plan will remain in place during working hours while the contractor finishes the ADA ramps, pours the last bit of concrete for the sidewalks and center island apron, paves the west entrance to McDonald’s/Chevron and brings in the topsoil for the landscaping.  At that point the roundabout will be fully functional. Starting in February, the current traffic control plan will be removed, except for occasional work until the weather permits the final paving and installation of permanent striping, and landscape plants. 
    • February 18 - Starting Monday February 22nd, the City’s contractor will begin installing the street lights in the 204th St roundabout area, work is scheduled to be complete by the end of the week. There will be short periods of flagger controlled traffic to accommodate this work. Please be cautious when driving through this work zone and be courteous to the workers. The final paving is still on hold until the weather permits, estimated to be around early spring. 
    • March 11 - On Friday, March 12th the City will be installing art work in the roundabout island.  This work is anticipated to start at 7:00 am and last for a short period of time.  During this work there will be flagger controlled traffic for west bound and south bound travel while moving the art into place.
    • March 12 - On Tuesday, March 16th the City’s Contractor, Reece Construction will begin the final paving of the 204th St Roundabout. This work is estimated to start at 10:00 am on Tuesday and continue into Wednesday. Traffic will be flagger controlled during paving, and will shift to the north or south side depending on paving location. Once paving is complete, Reece will come back to perform the final striping. Please expect delays and add additional time to your commute when driving in this area on Tuesday and Wednesday.
    • March 22 - Tomorrow, Reece Construction will begin to install striping in the roundabout area.  Traffic will be flagger controlled during the construction hours of 7:30 AM to 4:30 PM.  This work is anticipated to last one day only and will be weather dependent.  Please expect short delays when traveling in this area.  If you have any questions or concerns please contact us at or 360-403-3506.
    • March 30 - Due to weather conditions last week, Reece Construction was unable to lay the crosswalk striping. Tomorrow, they will return to stripe the crosswalks during standard construction hours of 7:00 AM to 4:00 PM.  Traffic will be flagger controlled while work is performed. Please add time to your commute as you may encounter delays when traveling in this area. This should be the last significant traffic impact before project completion and is weather dependent. 
  • Island Crossing Temporary Signal Replacement:

    • Project start date of January 19, 2021
    • January 19 - The contractors schedule has changed for this week.  They will be doing shoulder work from 8am to 4pm. This will not affect traffic flow. However, please be cautious when traveling in the area.     
    • January 28 -   Next week the contractor will be moving from night work to day work. They will be working from 8am to 4pm Monday through Friday on the shoulders. The work being done should not affect traffic flow, but please be cautious if you are traveling in the project area.
    • February 11 - Starting tomorrow the project will be suspended while WSDOT performs testing.  Work is scheduled to resume the beginning of March. 
    • March 2 - Due to delays in equipment delivery, the project will continue to be suspended for an additional few weeks. The City will keep you posed as to when the project will resume. If you have any questions please contact us at or 360-403-3544.
    • March 19 - Starting Monday, March 22nd, the City’s contractor will resume work at the SR-530/Smokey Point Blvd intersection.  During this week Service Electric will install the signal cabinet, test and turn on the new signals, remove the trailer mounted signals, and install curbing. The work will occur during the night hours of 9:00 PM to 5:00 AM Monday through Friday to minimize any traffic impacts.  Final striping is, currently planned for mid- April.
    • March 22 - The contractors schedule has changed.  Work will resume tomorrow during the hours of 8:00 AM and 5:00 PM with no traffic control in place.  On Wednesday, work will occur during the day and continue into the night. Traffic control will be in place with lane shifts during the night hours of 8:00 PM to 5:00 AM.  Please be cautious when driving in the area. 
    • March 22 -  There is a minor change to the schedule tomorrow.  In addition to working during the day, Service Electric will come back from 9:00 PM to approximately 11:00 PM to install a splice box.  This work will require a lane shift to the east bound traffic while they do the install. 
    • April 1 - Tonight, a Contractor will be changing out a sign on the new span wire signal system at the intersection of Smokey Point Blvd and SR-530.  This work will start at 9:00 PM and last approximately 1.5 hours.  During this time flagger-controlled lane shifts will occur to allow for access to the sign. Please be cautious when driving in this area. 

Snohomish County Projects

Washington State DOT Projects