Baring Bridge, Skykomish, WA.
The King County Department of Local Services, Road Services Division owns and maintains 185 bridges in the unincorporated area of King County. Built over many generations, these bridges range from less than 10 years to over 100 years in age. These bridges are an integral part of a road system that supports more than one million vehicle trips every day.
Learn about bridge load limits in unincorporated King County and the overlegal permit application process.
Find out about bridges that will be cleaned by King County in 2024, as a part of preventative maintenance efforts.
Access the latest updates on bridges with weight restrictions and find links to complete lists of bridges with vehicle weight, height, speed and other restrictions.
Ames Lake Bridge
This project replaces the 97-year-old Ames Lake Bridge with a wider structure and straighter bridge approaches.
King County will replace the existing timber bridge with a wider, steel truss bridge., which will be open to all vehicles and carry no weight restrictions.
Coal Creek Bridge
The existing 64-year-old timber support structure is decaying; the new replacement bridge will carry no weight restrictions.
Duvall Slough Bridge
More than 10,000 vehicles cross the Duvall Slough Bridge on NE Woodinville-Duvall Road every day. The concrete driving surface is now too damaged to rely on short-term repairs.