Work Completed Almost a Day-Ahead of Schedule


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) and Granite Construction opened the new temporary “S Curve” detour for southbound State Route 99 from south of Grant Line Road to south of Dillard Road Overcrossing almost a day-ahead of schedule.

“This is a major mile-stone for the project,” said Caltrans District 3 Director Amarjeet S. Benipal. “Crews worked around the clock to open the southbound S Curve detour as soon as possible and minimize the traffic delays. This was a huge undertaking and our crews were able to finish the work almost a day-ahead of schedule.”

A 55-hour closure on southbound SR-99 was necessary for crews to construct the temporary S Curve detour. One lane on southbound SR-99 was closed Friday, June 5 at 8:00 p.m. and scheduled to reopen Monday, June 8 at 6:00 a.m., however, crews were able to open the S Curve detour Sunday, June 7 at 8:45 a.m.

The northbound lanes were also reopened at 5:45 a.m.

Although the work for the 55-closure was completed, crews are still working on the SAC 99 Temporary River Bridges Project. Crews are scheduled to close one lane on northbound and southbound SR-99 south of Grant Line Road to south of Dillard Road Overcrossing starting at 6:00 p.m. until 5:00 a.m. The nightly closures are scheduled throughout the rest of the week from 6:00 p.m. to 5:00 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.

The SAC 99 Temporary River Bridges Project 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 click 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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