Traffic Advisory San Joaquin County 08/07/25

State Route 4 – Ramp Closures
Closures From Filbert Street To State Route 99 In Stockton

San Joaquin County – The California Department of Transportation (Caltrans) will perform various closures on State Route (SR-4) for maintenance and construction work within San Joaquin County. Work will occur as follows:

• Overnight, full on-ramp closures from Filbert Street to westbound SR-4/Crosstown Freeway for soundwall work beginning Monday, August 11, through Friday, August 15, from 7:00 p.m. until 5:00 a.m.
• Full connector ramp closure from eastbound SR-4/Crosstown Freeway to southbound SR-99 for pavement repairs on Tuesday, August 12, from 9:00 a.m. until 2:00 p.m.

Interstate 5 – Lane & Ramp Closures
Closures From Route 132 To Sacramento County Line

San Joaquin County – The California Department of Transportation (Caltrans) will perform various closures on Interstate 5 (I-5) for maintenance and construction work within San Joaquin County. Work will occur as follows:

• Overnight, full connector ramp closures from northbound I-5 to SR-132 for bridge work beginning Sunday, August 10, through Friday, August 15, from 7:00 p.m. until 6:00 a.m.
• Overnight, alternating lane closures on northbound and southbound I-5 from Hammer Lane to the San Joaquin/Sacramento County line for construction beginning Sunday, August 10, through Sunday, August 17, from 9:00 p.m. until 5:00 a.m. (northbound) and from 9:00 p.m. until 6:00 a.m. (southbound).
• Overnight, alternating full on and off-ramp closures at Hammer Lane, Eight Mile Road, SR-12 (Flag City), Turner Road, Peltier Road, and Walnut Grove/Thornton Road for construction beginning Sunday, August 10, through Sunday, August 17, from 9:00 p.m. until 5:00 a.m. (northbound) and from 9:00 p.m. until 6:00 a.m. (southbound).

The above listed lane and ramp closures on I-5 between Hammer Lane and the San Joaquin/Sacramento County line are required as part of the I-5 Anchor Pavement Project that will improve 34 miles of existing pavement and shoulders from Hammer Lane in Stockton to the San Joaquin/Sacramento County line. The project will also replace on- and off-ramps with upgraded concrete at Eight Mile Road, State Route 12, Turner Road, Peltier Road, and Thornton Road/Walnut Grove Road. For project details visit https://dot.ca.gov/caltrans-near-me/district-10/district-10-current-projects/10-1e300.

State Route 99 – Overcrossing & Ramp Closures
Long-Term Closure At Calaveras River For Repairs

San Joaquin County – The California Department of Transportation (Caltrans) will perform various closures on State Route 99 (SR-99) for maintenance and construction work within San Joaquin County. Work will occur as follows:

• Long term full closure of the Calaveras River/Frontage Road Overcrossing of SR-99 due to bridge repair work. Estimated completion date is September 2025. Please seek alternate route.
• Full on and off-ramp closures on southbound SR-99 at Acampo Road for litter removal beginning Wednesday, August 13, through Thursday, August 14, from 9:00 a.m. until 2:30 p.m.

Interstate 580 – Ramp Closures
Closures At Patterson Pass Road For Construction

San Joaquin County – The California Department of Transportation (Caltrans) will perform various closures on Interstate 580 (I-580) for maintenance and construction operations. Work will occur as follows:

• Overnight, full on and off-ramp closures on eastbound I-580 at Patterson Pass for construction work beginning Sunday, August 10, through Friday, August 15, from 9:00 p.m. until 5:00 a.m.
• Overnight, full on and off-ramp closures on westbound I-580 at Patterson Pass for construction work beginning Sunday, August 10, through Friday, August 15, from 7:00 p.m. until 3:30 a.m.