Project overview
Contractor crews working for WSDOT will paint the southbound SR 529 Steamboat Slough Bridge between Marysville and Everett, which has deteriorated due to weathering. This project will replace the paint to preserve the existing structural integrity and extend the service life of the bridge.
What to expect
Southbound SR 529 travelers and users of local roads can expect continuous single-lane restrictions.
This project includes painting work on the southbound Steamboat Slough Bridge.
The Steamboat Slough Bridge was built in 1927 and rebuilt in 2003. This bridge is one of four operating swing spans remaining in Washington and it was the last of its kind to be built in the state.
The bridge started life in 1927 as part of US 99 with a single lane in each direction and 2,500 vehicle trips per day. In 1954, an additional bridge was built across Steamboat Slough providing two lanes for north and southbound traffic. In 1971, the Washington State Legislature renamed US 99 to State Route 529. Today the Steamboat Slough Bridge carries 32,000 vehicles a day.
The purpose of this project is to protect the bridge from corrosion damage with a new coat of paint and maximize its useful life.
This is one in a series of projects scheduled to help preserve bridges along the SR 529 and I-5 corridor between Everett and Marysville:
I-5 Snohomish River Bridge painting, scheduled completion summer 2024
I-5 - NB Marine View Drive to SR 529 - Corridor and Interchange Improvements, scheduled completion fall 2025
