Cone Zone
Subscribe to the Cone Zone newsletter to get weekly updates on road work in Sammamish!
Updated 10/25/24
Stormwater Pipe Inspection
The City is inspecting its pipes along with cleaning and other services as needed on various roads throughout Sammamish. Work started Sept. 23 and is expected to last until the end of the year. There will be some traffic disruptions, but they are expected to be minimal, with occasional single-lane closures. Signage and traffic control will be in place when this occurs. Currently, work is being done at Klahanie Blvd at 242nd Ave South heading north, 23918 Southeast 42 Place, and 4366 239th Place Southeast.
WSDOT Traffic Alerts
Traffic Alert: I-90 Lane Closures
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.
State Route 18 Closures
People who use State Route 18 should expect slight traffic shifts during the daytime commute and intermittent nightly lane reductions. This may be as early as 8 p.m. Mondays through Thursdays, with all lanes reopening by 5 a.m. Flaggers will direct motorists when traffic is reduced to one lane. People should continue to plan extra time for their trips, as contractor crews work to widen the highway and redesign the interchange.
More information can be found here: https://wsdot.wa.gov/construction-planning/search-projects/i-90-sr-18-interchange-improvements