55-Hour Closure on Southbound State Route 99 in Sacramento County


California State Route 99

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



Sacramento County — The California Department of Transportation (Caltrans) is scheduled to close one lane on southbound State Route 99 from south of Grant Line Road to south of Dillard Road Overcrossing. The 55-hour closure is scheduled to begin Friday, June 5 at 8:00 p.m. until Monday, June 8 at 6:00 a.m.

Crews are also scheduled to close one lane on northbound SR-99 from south of Grant Line Road to south of Dillard Road Overcrossing. The nightly closures are from 6:00 p.m. to 6:00 a.m.

Motorists should expect delays and use an alternate route.

The California Highway Patrol (CHP) will be patrolling the project site ticketing motorists who are not adhering to the posted speed limit signs. The speed limit has been reduced to 55 MPH for traveling northbound and 45 MPH traveling southbound through the construction zone 24/7.

The closures and speed limit reductions are necessary for the safety of motorists and workers. Caltrans advices motorists to “Be Work Zone Alert” – someone’s loved one is at work.

Crews will be working on both sides of traffic shifting k-rail, paving, and working on a temporary “S curve” alignment for southbound traffic. Caltrans is planning to close the current southbound alignment and redirect traffic on the S curve alignment in order to build two new bridge structures.

The work is part of the SAC 99 Cosumnes River Bridge Replacement Project. The $166.9 million project begins south of Dillard Road Overcrossing to south of Grant Line Road (south of the city of Elk Grove), and will replace the Cosumnes River bridges and the Cosumnes River Overflow bridges with two new bridge structures. The project is expected to be completed by 2024. For more information about the project visit here.

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.

Check out Caltrans’ “Caltrans QuickMap” for current road conditions 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).




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California is under a Stay-at-Home Order and only essential travel is permitted.

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