Cone Zone
Subscribe to the Cone Zone newsletter to get weekly updates on road work in Sammamish!
Updated 8/15/25
Fiber Optic Construction Project
🕤 August 20 -26, 2025 - 9:30am – 3:30pm
🚦 Traffic Impacts: Temporary lane closures will occur during working hours. Traffic control will be in place to guide vehicles safely through the work zones.
📍 Work Locations:
📌 The intersection of 228th Ave NE and NE 12th Pl
📌 The intersection of 228th Ave NE and NE 15th St
📌 The intersection of 228th Ave NE and NE 18th Pl
📌 The intersection of 228th Ave NE and NE 25th Way
📌 The intersection of Sahalee Way NE and 223rd Ave NE
👷♂️ Crews will be on site working to determine location of existing utilities for planned fiber optic construction project.
Traffic Signal & Street Light Pole Inspection
🕤 August 26, 2025, 6:00am – 8:00am
🚦 Traffic Impacts: Drivers should use caution when traveling through the area during this time.
📍 Work Locations:
📌 The intersection of 228th Avenue Southeast and Southeast 30th Street
📌 Along Southeast 30th Street near the South Sammamish Park & Ride
👷♂️ Crews will be inspecting paint on traffic signal and street light poles.
SE 24th Boardwalk repair
🕤August 11 - August 22, 8:00am – 3:30pm
🚦 Traffic Impacts: Single lane closure westbound with flaggers.
📍 SE 24th SE and & 234th Pl SE
👷♂️ This project is replacing the support structure on the boardwalk.
Stormwater Pipe CCTV Inspection Underway
🕤 August 8 – August 22, 2025
🚦 Traffic Impacts: Traffic disruptions will be minimal, with only occasional single-lane closures expected. Appropriate signage and traffic control measures will be in place.
📍 Various locations
📌 NE 14th DR from 220th PL NE – 228th Ave NE
👷♂️The project will involve pipe inspections using CCTV technology, along with cleaning and vactoring services as needed. Some pipes may require jetting to remove debris or obstructions. All work will be conducted following safety and operational protocols to ensure accurate inspections and minimal disruptions.
2025 2025 ADA Barrier Removals
🕤 July 14 – August 22 | 7:00 AM – 5:00 PM
🚦 Traffic Impacts: Temporary right-lane closures may occur during working hours. Traffic control will be in place to guide vehicles safely through the work zones.
📍 Work Locations:
- Site A: Replacement of damaged sidewalk panels at 16 locations
📌 228th Avenue SE/NE, between SE 4th Street and NE 8th Street (both sides of the street)
- Site B: Replacement of pedestrian curb ramps at two intersections
📌 SE Klahanie Blvd, at the intersections with • 256th Avenue SE • SE 39th Way
👷♂️ This project improves pedestrian safety and ADA accessibility throughout the area.
Tree Trimming
Asplundh, working on behalf of PSE, is currently trimming trees at various locations throughout the city. This work is expected to last 3–4 weeks and will include traffic control as needed.
📍 Current Work Location: Issaquah-Pine Lake Road SE near the 4800 block
Watermain Installation
🕤 August 2025 – December 2025
🚦 Traffic Impacts: Traffic control is being used and some minor delays are expected.
📍 Work Locations: Sahalee Drive East
👷♂️ Northwest Sammamish Water & Sewer will be installing a new water main.