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Posted on: May 30, 2017

Construction to Impact Mill Creek Traffic Throughout Summer 2017

An image of a road work sign
A combination of projects by the City of Mill Creek, Snohomish County, Community Transit, local utilities and the Washington State Department of Transportation will have a significant impact on Mill Creek traffic this summer.

Upcoming projects and timelines, weather permitting, are as follows:
  • Catch Basin Cleaning Work – Through June 2017. The City is cleaning catch basins on 164th Street SE, Bothell Everett Highway, Dumas Road and 132nd ST SE (SR96). During the work on each segment, the right lane will be closed. Flaggers and traffic control devices will help community members navigate through the construction zones. This work will occur during the day between 7 a.m. and 5 p.m.
  • WSDOT Striping Work on SR 527 – June 18. To improve pedestrian safety, Washington State Department of Transportation will restripe an 800-foot section of SR 527 along the southern border of Mill Creek by Li’l Sprout Nursery at 17414 Bothell-Everett Hwy. The center turn lane will be eliminated just past the north driveway to this business. A new reduced median will be established where the roadway lines for northbound traffic will be shifted laterally to increase shoulder width along the highway. The Lil’ Sprout Nursery will have a full-use center turn lane at their northern driveway. Traffic may be reduced to a single lane each direction between 12 a.m. and noon on Sunday, June 18. In addition, the center turn lane will be closed between 12 a.m. and 2 p.m. on June 18.
  • Comcast Utility Project – June 26 through July 31. Comcast will conduct some utility work along SR 527 and Dumas Road. Work will occur at the intersection of SR 527 and Mill Creek Blvd. In addition, lane closures will occur northbound on SR 527 between Mill Creek Blvd. and Dumas Road, as well as along Dumas Road. Most of the work will take place Sunday through Thursday nights from 10 p.m. to 5 a.m.
  • Snohomish County PUD Utility Project – Now through September 2017. Snohomish County PUD began an underground utility construction project in April that will result in lane closures and restrictions in Mill Creek through September. PUD will be replacing approximately 9,000 circuit feet of cable. The affected roadways include Bothell-Everett Highway to Mill Creek Road; Mill Creek Road to Village Green Drive; Village Green Drive to 148th Street SE; and 148th Street SE to 32nd Avenue SE. Most of the work should be on the shoulder and grassy area. However, travel lanes may be impacted. Flaggers and traffic control devices will help community members navigate through the construction zones. Lane closures on arterials, including Mill Creek Road and Seattle Hill Road, are permitted between 9 a.m. and 3 p.m. Monday through Friday. Lane closures on Village Green Drive are permitted between 7 a.m. and 4 p.m.
  • Seattle Hill Road – Now through Summer 2018. Snohomish County’s Public Works department has begun work on widening and repaving Seattle Hill Road between 132nd Street SE and 35th Avenue SE. The work began in mid-April and is expected to last through the summer of 2018. The work will include adding bike lanes, curbs, sidewalks and a center turn lane. Drivers are advised to take alternate routes due to intermittent single-lane closures and delays of up to 20 minutes. In addition, the project will require two full-road closures for three days this summer, as well as one week-long full-road closure. The planned detour route is for traffic to use 35th Avenue SE. Project updates are online at
  • Community Transit Work Along 128th near I-5 – June through September. Work will begin this June on a project to widen 128th Street approaching the I-5 on-ramps between 3rd Avenue SE and northbound I-5, and 4th Avenue W and southbound I-5. Work will require right-hand lane closures at times, as well as temporary pedestrian impacts. The construction will occur at night and on weekends to minimize traffic backups and delays, as well as to minimize hazards to workers, and will take place only during the summer construction season. As a result of this project, there will be a new right-hand freeway entrance to northbound I-5 from the Mill Creek area.
  • Freshening of Mill Creek Crosswalks and Road Markings – July and August 2017. The Snohomish County Traffic Maintenance group will be freshening up faded crosswalks and other road markings around the City. Work is anticipated to take place in July or August. Traffic control and flaggers will be provided during work as needed and will ensure traffic flow.
  • 132nd Street SE Paving – August 2017 through Early 2018. The Washington State Department of Transportation plans work on State Route 96 between I-5 and State Route 9, which encompasses the length of 132nd Street SE within the City of Mill Creek. This project also impacts traffic heading to/from Snohomish on the Seattle Hill Road portion of SR 96. Work will include resurfacing the roadway and installing dozens of pedestrian ramps to meet ADA guidelines. The construction will occur at night, generally 9 p.m. to 5 a.m. on weeknights, to minimize traffic backups and delays, as well as to minimize roadway hazards to workers. The project also includes the installation of a curb in the median at 12th Drive SE to increase driver safety by restricting left turns at the intersection. Project updates are online at
  • Adaptive Signals Along 132nd and SR-527 – Summer 2017 through 2018. Snohomish County is leading and partnering with other local agencies to install 14 adaptive light signals in Mill Creek along SR-527/Bothell-Everett Hwy and along 132nd Street SE. The signal work is happening in advance of the new Swift Green Line. Adaptive signal control enables the traffic signal timing to adapt based on real-time traffic demand to reduce congestion, delay and waiting for all users at the intersections and along corridors. Details will be forthcoming. The County currently is reviewing proposals to select a vendor.
  • Community Transit Work Along SR 527 – Possibly Late-August 2017 through Late 2018. Work is underway to select a contractor for construction of Swift Green Line stops and road improvements along SR-527. This process will take a couple of months. Construction work is anticipated to begin in late-August and will last through the end of 2018. Work will include concrete reinforcement of right-hand lanes, which may require brief lane closures at times, and construction on sidewalk curbs, which may temporarily impact pedestrian traffic. The construction will occur at night and on weekends to minimize traffic backups and delays, as well as to minimize hazards to workers. Sign up to stay updated on Swift Green Line progress at
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