WSDOT announced several roadwork projects beginning August 3, 2026, affecting major routes in Bellingham. The right general-purpose lane on northbound I-405 will close nightly from August 3 to 5, and the eastbound I-90 off-ramp to Factoria Boulevard will close nightly through August 14. Drivers should expect backups and detours.
The Northeast Sunset Boulevard on-ramp to northbound I-405 will close from August 7 to 10, and the northbound I-405 off-ramp to Coal Creek Parkway Southeast will close the same dates. SR 243 near Mattawa will have alternating one-lane traffic on August 5-6 for bridge maintenance. These changes are expected to cause delays, with signed detours provided for most closures.