Steamboat Slough Bridge Scheduled for Nightly Closures (01/07/2021)


State Route 160 Sign

District:  District 3 - Marysville
Contact:    Dennis Keaton
Phone:  (530) 741-5474; (916) 825-5252



SACRAMENTO COUNTY – Caltrans is alerting motorists that the Steamboat Slough bridge on State Route 160 near Courtland will be to closed to vehicle traffic nightly the week of January 18.

Additional construction is needed to maintain and keep the bridge operational. The bridge remains safe to travel on.

Bridgework is scheduled  January 18 through 22 requiring a full closure to motorists lasting  into the early morning hours.


  • January 18, 19, 20, 21 and 22
  • Between 7 p.m. to 6 a.m


Use the Walnut Grove and Paintersville Bridges.

Caltrans urges motorists to use this detour or use Interstate 5 in Sacramento County as an alternate route.

These delta bridges were originally constructed in the early 1920s and then reconstructed or refurbished in the early 1950s. Caltrans urges motorists to plan accordingly and to use suggested detours. Current truck restrictions will apply.

California legal trucks having a kingpin-to-rear-axle of more than 30 feet are not recommended on State Route 160.

Weather conditions could delay or cancel scheduled work. Caltrans advises motorists to “Be Work Zone Alert.” For motorists using the State Route 84 Real McCoy and SR-220 Ryer Island Ferries as a bridge detour, additional ferry information is located on our Caltrans Delta Ferries website.

Bay Area motorists can check 511SFBAY or follow Caltrans District 4 on Twitter. In the Sacramento region, Caltrans District 3 will issue construction updates on Twitter @CaltransDist3 and on Facebook at CaltransDistrict3.

For real-time traffic, click on Caltrans’ QuickMap or download the QuickMap app on iTunes or Google Play.  Motorists also can call the California Highway Information Network automated phone service at 1-800-427-ROAD (7623).