Partial Nighttime Closures on State Route 99 from Dillard Road Overcrossing to Grant Line Road Overcrossing in Sacramento County (09/18/2020)


California State Route 99

District:  District 3 - Marysville
Contact:  Angela DaPrato
Phone:  (916) 826-3093



Sacramento County — The California Department of Transportation (Caltrans) is scheduled to close one lane on northbound and southbound State Route 99 from south of Grant Line Road to south of Dillard Road Overcrossing.

The closure is scheduled from 8:00 p.m. to 5:00 a.m. Sunday, September 20 through Friday, September 25, and beginning 9:00 p.m. Friday, September 25 until 6:00 a.m. Saturday, September 26.

One lane will remain open in each direction. 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 45 MPH traveling northbound and southbound through the construction zone 24/7.

Crews are scheduled to work in the construction zone during the day and night, and the speed limit has been reduced for the safety of workers and motorists. The speed limit will be enforced 24/7. Caltrans advices motorists to “Be Work Zone Alert” – someone’s loved one is at work.

Crews are scheduled to perform various construction activities, including but not limited to bridge work, drilling, gravel work, installing rebar, channel brackets, pouring columns and moving equipment.

The work is part of the SAC 99 Cosumnes River Bridge Replacement Project. The $166.9 million project includes $110 million in SB 1 funds and was awarded to Granite Construction. The 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 southbound McConnell underpass and the existing northbound McConnell Overhead structure will be replaced with a single McConnell Overhead structure for both northbound and southbound SR-99. The scope of work also includes improving the Dillard Road Overcrossing. The project is expected to be completed by 2024. For more information about the project visit here.

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. 

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.