District: 10 - Stockton
Contact: Skip Allum
Phone: (209) 948-7176
FOR MOKELUMNE RIVER BRIDGE REPAIRS
EASTBOUND & WESTBOUND STATE ROUTE 12 BETWEEN SR-160 AND INTERSTATE 5
Stockton’ The California Department of Transportation (Caltrans) is planning a series of full highway closures of eastbound and westbound State Route 12 (SR-12) between SR-160 and Interstate 5 (I-5) for repair work on the Mokelumne River Bridge located at the San Joaquin/ Sacramento County line.
Caltrans will perform one-way traffic control at the SR-12/ Mokelumne River Bridge beginning Tuesday, January 28 through Friday, January 31, 2020 from 9:00 p.m. until 5:00 a.m. One-way traffic control will resume on Tuesday, February 4 from 9:00 p.m. until Wednesday, February 5 at 5:00 a.m., in preparation for a full highway closure beginning at 9:00 p.m. on Wednesday, February 5, until 5:00 a.m. on Thursday, February 6, 2020. This closure is required to lift and weigh the bridge deck swing span. Boat traffic will be impacted as the full closure will not allow for the bridge to be opened for boats. 
- MORE -
Caltrans will then perform a 55-hour full closure of SR-12 beginning on Thursday, March 27 at 10:00 p.m. until 5:00 a.m. on March 30, 2020. Work scheduled during this closure includes removal of the bridge “end jacks,” which secure the movable bridge back into alignment with the roadway after having opened for boat traffic.
Three additional 55-hour full closures are also required from mid-April to early May 2020 (dates yet to be finalized) to replace the “end jacks” and to remove and replace the center main bearing, which allows the movable bridge to swivel open for boat traffic and return back into alignment with the highway for motorist travel.
No lane closures are scheduled during the Easter weekend of April 10-12, 2020.
DETOUR INFORMATION:
Motorists should consider I-5 and I-80 as alternate routes and should allow additional travel time due to the detour. Detour routes are below (an approximate 30-mile, 45-minute detour) and will be posted:
Traveling Eastbound on SR-12
Take SR-160 north to Walnut Grove Road to I-5
Traveling Westbound on SR-12
Take I-5 north to Walnut Grove Road to SR-160 south
Access to local residents, businesses and emergency services will be allowed into Tower Park from the east and into B&W Resort Marina (Brannon Island Road) from the west.
Current truck advisories apply. CA LEGAL trucks with kingpin to rear axle over 30 feet are not recommended on SR-160. Trucks are discouraged from using this detour route and are advised to use I-5 and I-80 as alternate routes.
The work schedule is subject to change due to traffic incidents, weather, availability of equipment, materials, and/or construction-related issues.