Road Projects for the Week of July 9 - 15

Roundabout at ELSP and SE 43rd Street Revisions

This is a City of Issaquah project.

The City of Issaquah has awarded the contract for the East Lake Sammamish Parkway (ELSP) and SE 43rd Street Roundabout Revisions project. Their contractor will be Northwest Cascade. Construction activities began the first week of June. Work is projected to take approximately two months to complete. The City of Issaquah will submit a Right-of-Way Permit for traffic control through the City of Sammamish for detours through Sammamish streets.

The City of Issaquah does not have planned dates for closure of the roundabout at this time. Plan to take alternate routes if possible and expect traffic delays. A detour route map can be found below.

More information on this project can be found on the City of Issaquah's website, linked here.

ELSP NE Lane Shift - July 12, 2022

There will be a lane shift set up on East Lake Sammamish Parkway NE, north of Inglewood Hill Road, on Tuesday, July 12th for construction. Both directions of traffic will remain open, but shifted to the shoulder. This means vehicles containing wide loads must seek an alternate route. Bicyclists will be required to merge into traffic. Motorists should exercise caution when traveling through this construction zone.

Construction and lane shift is expected to take place between the hours of 9:00 a.m. and 3:00 p.m. Below is a map of where the lane shift will occur on East Lake Sammamish Parkway.

Inglewood Hill Road Parking Lot Closed - July 12, 2022

The Inglewood Hill Road parking lot for Lake Sammamish Trail will be closed all day July 12th, 2022 by King County’s contractor to install storm culvert sections. King County needs to close the parking lot in order to use a crane for this installation. Motorist will need to find other areas to park their vehicles during this time.

SR 520 full closure July 8, 2022 – July 11, 2022

This is a WSDOT Project

Drivers heading between Seattle and the Eastside will need to plan alternate routes this weekend, while SR 520 is closed in both directions over Lake Washington. Beginning Friday night, The Washington State Department of Transportation will fully close the freeway between Seattle and Medina, allowing contractors to begin installing girders for the new Montlake lid.

The closure is scheduled to begin at 11:00 p.m. Friday, July 8, and the route will reopen in time for the Monday morning commute, approximately 5:00 a.m. Below is a map of the closure. More information on this closure can be found on the WSDOT construction notice, linked here.

East Lake Sammamish Trail South Segment B Stage 2 Construction

The King County East Lake Sammamish Trail (ELST) South Segment B Phase 2 will begin construction in Spring 2022. All private property owners adjacent to the trail will be able to access their property during construction with limited exceptions for safety reasons. For example, access may be limited, or neighbors may experience short delays during major material unloading or wall construction along a lane. King County plans to incorporate flaggers/spotters on site on site to help pedestrians safely access their properties during daytime.

  • Project Start Point: Approximately 1,350’ south of the intersection of SE 8th Street / East Lake Sammamish Parkway SE (STA 371+59)
  • Project End Point: Approximately 750’ south of the intersection of NE 16th Street / East Lake Sammamish Parkway SE (STA 468+00)

The last uncompleted ELST section, the 1.9-miles from Pine Lake Creek to Inglewood Hill Road, will be closed for construction beginning in early June 2022 until December 2023.

For additional project information, please visit the project website: You may also contact the project team directly by email at or by calling the project hotline at 1-888-668-4886.

Upcoming Spring Construction-related Traffic Impacts

Drilling and excavating in Pacific Estates neighborhood: Puget Sound Energy completed the drilling and excavating on NE 22nd St and 228th Ave NE in the Pacific Estates neighborhood for a remediation power cable replacement. Restoration is anticipated to begin in later in July.

Puget Sound Energy Natural Gas Project

Crews from Puget Sound Energy and InfraSource will be working to replace portions of the existing underground natural gas main with new, corrosion-resistant plastic pipe. Residents of the Tree Farm Neighborhood should expect emails and/or door hanger notices about this work.

Gas Main work in the Tree Farm Neighborhood will begin on Monday, May 16, 2022. Work will take place between the hours of 8:00 a.m. to 4:00 p.m.

Work on NE 8th St is expected to begin the week of July 11, 2022, and last for approximately 2-3 weeks, with restoration of the pavement occurring afterwards. Work on NE 8th St. will take place Monday through Friday, 8:00 a.m. to 4:00 p.m. This work was put on hold and was rescheduled from June to July 2022.

Traffic control flaggers and signs will guide vehicles and pedestrians safely around the project areas and there will be lane closures and revisions as crews move along the project route. The bus stop on NE 8th St will be moved 250 ft. west of its current location. Some street parking will be impacted. “No parking” signs will be placed in the areas prior to work beginning.

Drivers should expect delays and use caution. Impacted streets are NE 8th St, NE 7th Ct, 237th Pl NE, NE 6th Ct, NE 6th St, NE 4th Pl, 238th Ave NE and 239th Ave NE, Sammamish. See maps of work below for more details.

Striping Maintenance Work

Arterials: The city will be performing striping maintenance work on the city’s arterials throughout the summer to refresh existing fog lines and center lines. The arterials being targeted are shown in the map below. This type of work requires dry road pavement so dry weather days are being targeted. Drivers should expect delays and use caution.

East Lake Sammamish Trail South Segment B Stage 1 Construction

The King County East Lake Sammamish Trail (ELST) South Segment B Phase 1 continues with construction. There will be traffic impacts related to the closure of the gravel surface trail segment which causes the re-routing of cyclists and pedestrians to East Lake Sammamish Parkway (ELSP). Additionally, there will be construction traffic on ELSP.

  • Project Start Point: Intersection of SE 33rd / East Lake Sammamish Shore Lane Drive SE
  • Project End Point: Approximately 900' south of the intersection of SE 8th Street / East Lake Sammamish Parkway SE

Notices for construction activity outside of the City of Sammamish:

Road maintenance on 244th Ave NE near Redmond Fall City Rd, (SR-202)

This is a King County Local Services project.

King County Road Services Division is prioritizing 244th Ave NE near SR-202 to receive snow and ice pre-treatment. Due to a slide occurring in winter 2020, both lanes of 244th Ave NE are narrowed until the impacted support wall can be repaired. The repair of the support wall is expected to begin in Summer 2023. Soil samples yielded unexpected data, which caused the design phase to be extended. King County Road Services Division has a 24/7 Road Helpline - (206) 477-8100. More information on this project can be found linked here.

Downtown Redmond Link Extension (DRLE) - Sound Transit work

This is a City of Redmond and Sound Transit project.

*This work will begin on April 15, 2022, and last for 4 months.

Crews are scheduled to close the on-ramp from Redmond Way to westbound SR 520 for four months in order to build a new on-ramp. This is part of the Redmond Link Extension construction. Drivers should plan accordingly due to the ramp closure. To stay up-to-date and learn more about this project, please visit the DRLE tab in Cone Zone.

Share on Facebook Share on Twitter Share on Linkedin Email this link
<span class="translation_missing" title="translation missing:">Load Comment Text</span>