Cone Zone

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Updated 5/12/2026

228^th Ave SE & SE 4^th St (Crusader Way) Traffic Signal Work

• When: May (Ongoing)
• Work Location: Intersection of 228^th Ave SE and SE 4^th St (Crusader Way)
• Traffic Impacts: Drivers may experience longer delays and temporary signal timing adjustments during the work
• Crews are completing traffic signal equipment upgrades.

 King County Wastewater Treatment Division Survey Work

• When: May 11-15, 2026: 7:00am – 3:30pm
• Work Location: NE 28^th Place and heading south to the south side of NE 26^th
• Traffic Impacts: None. Surveyors will be staged on shoulders of East Lake Sammamish Parkway Northeast
• True North will be surveying and marking utilities.

Water District

• When: May 1 – May 14, Monday-Friday, 9:30am-3:00pm
• Work Location: Sahalee Drive Northeast and Sahalee Way Northeast
• Traffic Impacts: West shoulder will have traffic impacts. Traffic Control will be present.
• Northeast Sammamish Sewer and Water will be doing a water tie.

2026 Citywide Traffic Counts

• When: April 27-May 11
• Work Location: Citywide
• Traffic Impacts: This equipment will not impact traffic, however they may be felt when driving over them. Drivers should also use caution when passing the contractor’s vehicles when stopped on the side of the road to place tubes or check on their equipment.
• Tubes will be placed on main roadways to collect traffic volumes and cameras will be setup at intersections to collect data on vehicle movements.
• Project webpage link: https://www.sammamish.us/government/public-works/traffic-engineering/citywide-traffic-counts/

Issaquah School District

• When: May 11-15
• Work Location: 4000 block of 228^th Avenue Southeast
• Traffic Impacts: Signage will be present stating the traffic revision.
• A new turn lane has been placed for construction trucks turning into the new school site.

 George Davis Creek Fish Passage Project

• When: May 14-15 and May 18-19
• Work Location: East Lake Sammamish Parkway – North of Northeast 7^th Court to just north of Louis Thompson Road.
• Traffic Impacts: Traffic control will be present. There will be one lane closure on East Lake Sammamish Parkway.
• Crews will be potholing.

Overlay

• When: May 12, 9:30 am-3pm
• Work Location: South bound lane at 2203 228^th Avenue Southeast
• Traffic Impacts: Traffic control will be present.
• Asphalt contractor will be doing a mill and overlay.