Cone Zone

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Updated 7/11/25

Road Striping Maintenance Night Work

King County will be performing striping maintenance work on the city’s roads starting the evening of July 15th to refresh existing fog lines, center lines, and raised pavement markers. This work will be taking place at nighttime between the hours of 9pm to 6am. Crews will place signage and warnings of wet paint, and drivers should expect delays and use caution.

For more information about this program, please visit:

https://www.sammamish.us/government/public-works/traffic-engineering/citywide-road-marking-maintenance-program/

Klahanie Park Tree Removal

Hazardous trees will be removed along the trail south of SE 32^nd St. There will be intermediate traffic delays while trees are being lowered.  Expect traffic delays the week of 7/14 – 7/25 along the following location:  

SE 32^nd St from 244^th Ave SE to Beaver Lake Middle School

The project is expected to occur from July 9 - July 25, 8am – 3pm

Sahalee Lane Closure                         

There will be a single lane closure with flaggers alternating traffic on July 14-16 between 9:30 AM and 3:30 PM. Motorists may expect minor delays over these hours. The work allows geotechnical exploration and installation of a slope inclinometer north of the Sahalee Greens gate and south of NE 36^th Street.

Louis Thompson Tightline Project

1-Way detour on Louis Thompson Road will be extended through July 25, 2025 for soldier pile retaining wall installation. This extension allows the project to advance wall construction in coordination with overhead utilities on the power poles. Extending this ongoing detour will reduce the impact on motorists and residents and eliminate the need for temporary road closures.

PSE Work

Paving will occur at the following locations:

NE 37^th Way and NE 38^th St at 208^th Ave NE

NE 16^th St and 211^th Way NE

This work will start July 14^th and end July 23^rd.  Lakeside industries will be doing the work and will also be notifying residents. Utility iron will be lowered in the road first followed by grinding and then paving. Traffic control will be present for traffic and pedestrians.

2025 2025 ADA Barrier Removals

The following sites may experience the right travel lane temporarily closed during working hours (7am-5pm) from July 10^th through August 22^nd.   Traffic control will be provided.

Site A:  Replacement of damaged sidewalk panels at 16 locations

    228^th Avenue SE/NE, between SE 4^th Street and NE 8^th Street (both sides of street)

Site B:  Replacement of pedestrian curb ramps at the two intersections

    SE Klahanie Blvd, at the 256th Avenue SE & SE 39th Way intersections

2025 Pavement Overlays

Lakeside Industries will be grinding the existing asphalt, placing new asphalt, and adjusting utilities in the roadway at West/East Beaver Lake Drive SE, from SE 24^th Street to SE 22^nd Place. The work will occur from June 30-July31, from about 7am to 4pm.

The right travel lane will be temporarily closed throughout most working hours.  Flaggers will be alternating the traffic during lane closures. 

Stormwater Pipe Inspection

Crews will inspect and clean stormwater pipes at the following locations:

-Issaquah Fall City Rd by Endeavour Elementary School

-Issaquah Pine Lake Road and 238^th Way SE

-Klahanie Blvd & 242^nd Ave SE

-Issaquah Pine Lake Road and SE 35^th CT

-Issaquah Pine Lake Road and 228^th St, SE 32^nd St and 247^th Ave SE

Work will be done July 17-July 18. Traffic disruptions will be minimal, with only occasional single-lane closures expected. Appropriate signage and traffic control measures will be in place to ensure the safety of both workers and the public.

Ziply Fiber Restoration Work

The Ziply permits are currently suspended by the City of Sammamish. Ziply is still allowed to perform restoration work associated with previous construction activities. Restoration activities include soft surface replacement, asphalt patching, and sidewalk replacement.

WSDOT Traffic Alerts

Traffic Alert: I90-SR 18 Interchange Improvements

Washington State Department of Transportation (WSDOT) crews are continuing repairs on the Interstate 90 project, which will have congestion impacts, especially during peak travel time. These are a continuation of repairs WSDOT began in summer 2022. While this work is occurring, please plan ahead and allow extra time.

Starting Thursday night, July 17, both directions of SR 18 at the I-90 interchange will close around the clock for eight days, reopening Friday, July 25.  See website for details.

https://wsdot.wa.gov/construction-planning/search-projects/i-90-sr-18-interchange-improvements