Road Alert: Upcoming Road Closure and Lane Restriction for Fifteen Mile Creek Bridge Replacement Project

King County, Washington sent this bulletin at 05/19/2026 02:23 PM PDT

Fifteen Mile Creek Bridge #493C on SE May Valley Rd between Issaquah-Hobart Rd SE and 233rd Ave SE

Road Closure: Monday, June 15, 2026, at 7 am to Sunday, August 23, 2026, at 11:59 pm

Lane Restriction: Tuesday, June 2, 2026, to Friday, June 12, 2026 from 7 am to 6 pm

The Fifteen Mile Creek Bridge #493C Bridge Replacement Project will take up to 12 weeks to complete, including a 10-week full closure of the bridge starting as early as Monday, June 15, 2026. Lane restrictions from Tuesday, June 2, 2026, to Friday, June 12, 2026, will allow crews to prepare the site ahead of the full closure.

Full Closure: Beginning at 7 am on Monday, June 15, 2026, SE May Valley Road between Issaquah-Hobart Road SE and 233rd Avenue SE will be closed in both directions, 24/7, to all travelers, including emergency services, through 11:59 pm on August 23, 2026. All travels will follow the marked detour route.

Lane Restrictions: Before the full closure begins, crews will reduce Fifteen Mile Creek Bridge #493C to a single lane each weekday from Tuesday, June 2, 2026, to Friday, June 12, 2026, from 7 am to 6 pm. This work allows crews to prepare the site for the 24/7 closure and bridge replacement.

This work may be rescheduled or delayed due to machine, crew, or equipment availability or weather.

Additional Information:

To learn more about this project, visit the project website: https://KingCounty.gov/15MileCreek

For the most up-to-date travel information, visit MyCommute: KingCounty.gov/MyCommute

*FREIGHT ALERT: Issaquah-Hobart Road SE and Issaquah city streets are not suitable for freight traffic. Trucks should use the alternate routes shown on the project website.

Receive important updates

Subscribers receive emails and text messages about unincorporated King County road construction projects, significant weather-related road closures, and natural disasters. Manage your subscriptions to receive all road alerts or limit these updates only to specific zones. Feel free to forward these updates to others who can subscribe by clicking here.

Find us on Facebook

View closures online: kingcounty.gov/MyCommute

Update your preferences or unsubscribe. If you have questions about this service, you may search FAQs here.

Information concerning state and some city routes is provided by non-King County agencies and included for the convenience of the public. If it is critical that you have more current information about the status of a road or a service request, please call 206-477-8100 or 800-527-6237. In major events, phone lines will be very busy and your patience is requested. Please do not e-mail for emergency road status information.

Please note that short-term road closures related to traffic collisions or utility work such as down powerlines are not reported via Road Alerts or My Commute as those closures are managed by outside agencies. During normal working hours, King County will attempt to post closure information of this type on our X (Twitter) account.

DISCLAIMER: King County Road Services provides Road Alerts as a service to the public. While we try to provide accurate and timely information, estimates of the nature and duration of closures are subject to variables such as weather and traffic conditions that are beyond the control of King County and, therefore, difficult to predict. People relying on this information should do so at their own risk. Neither King County nor its employees or agents shall be liable for the accuracy of this information, or any actions taken as a result.

King County's privacy policy.

Have questions or comments about this message? Please send us an email.