Three Mile Slough Bridge Scheduled for One-way Traffic Control (08/13/2020)


State Route 160 Sign

District:  District 3 - Marysville 
Contact:  Dennis Keaton
Phone:  (530) 741-5474; (916) 825-5252
Contact:  Angela DaPrato
Phone:  (916) 826-3093



Sacramento County — The California Department of Transportation (Caltrans) will continue to perform partial closures on the Three Mile Slough Bridge (on State Route 160) to complete prep work for additional parts replacement next week. The bridge remains safe for travel.

Crews will perform one-way traffic control from 9:00 a.m. to 3:00 p.m. Monday, August 17 through Friday, August 21, and from 6:00 a.m. to 8:00 p.m. Saturday, August 22 and from 8 a.m. to 3 p.m. Sunday, August 23.

A contractor is scheduled to install reinforcement members on the lift span. This is necessary for the replacement of the sheave bearings and to machine the trunnion in both towers.

Caltrans urges motorists to plan accordingly and to expect delays.

Current truck restrictions are enforced. California legal trucks having a kingpin-to-rear-axle of more than 30 feet are not recommended on SR-160.

Suggests alternate routes:

•   For detours involving Sacramento County origins/destinations, motorists may consider using Interstate 5.

•   For other detours, motorists may consider using State Routes 12, 4, and 160 along with segments of Interstates 80 and 680.

Caltrans advices motorists to “Be Work Zone Alert” – someone’s loved one is at work.

Work is scheduled to begin as listed but subject to change due to traffic incidents, weather, availability of equipment and/ or materials, and construction related issues.




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 511 SFBAY 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.

Check out Caltrans’ “Caltrans QuickMap” for current road conditions at or download the free QuickMap app on the App Store or Google Play. Motorists also can call the California Highway Information Network automated phone service at 1-800-427-ROAD (7623).




Continue to Practice Social Distancing and Keep Washing Your Hands.