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Traffic Advisory San Joaquin County 03/13/26

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State Route 4 – Lane & Ramp Closures
Long-Term One-Way Traffic Control At Old River Bridge

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

  • Long-term, 24-hour, one-way traffic control will be implemented on SR-4 at the Old River Bridge for construction through November 2026.
    • Vehicles measuring over 34 feet in length are strongly recommended to seek alternate routes. SR-12 or Interstate 205 are highway alternatives between Discovery Bay and Stockton.
  • Overnight, full on-ramp closures from Filbert Street and from Wilson Way to westbound SR-4/Crosstown Freeway for construction work beginning Monday, March 16, through Friday, March 20, from 7:00 p.m. until 5:00 a.m.
  • Single lane closure from Walker Lane to Adelbert Avenue for construction beginning Monday, March 16, through Friday, March 20, from 9:00 a.m. until 3:00 p.m.

Interstate 5 – Lane & Ramp Closures
Closures From French Camp Road 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:

  • Full on-ramp closure from French Camp Road to northbound I-5 for pavement work on Tuesday, March 17, from 9:00 a.m. until 2:00 p.m.
  • Full on-ramp closure from SR-4/Charter Way to northbound I-5 for pavement work on Thursday, March 19, from 9:00 a.m. until 2:00 p.m.
  • Full off-ramp closure from northbound I-5 at SR-4/Charter Way for pavement work on Wednesday, March 18, from 9:00 a.m. until 2:00 p.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, March 15, through Saturday, March 21, 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, March 15, through Saturday, March 21, 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 – Lane Closures
Overnight Lane Closures For Construction In Manteca

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:

  • Overnight, alternating lane closures on SR-99 from Jack Tone Road to SR-120/Manteca Bypass for bridge work beginning Sunday, March 15, through Friday, March 20, from 9:00 p.m. until 4:00 a.m. (northbound) and from 10:00 p.m. until 6:00 a.m. (southbound.)
    • o For any required detours and more information on this San Joaquin Council of Governments-led, SR-120/99 Interchange Improvement project, please visit https://www.sjcog.org/677/ABOUT.

State Route 120 – Ramp Closures
Overnight Ramp Closures For Maintenance In Manteca

San Joaquin County – The California Department of Transportation (Caltrans) will perform various closures on State Route 120 (SR-120) for maintenance and construction work within San Joaquin County. Work will occur as follows:

  • Overnight, full connector ramp closures from westbound SR-120/Manteca Bypass to northbound I-5 for pavement work beginning Monday, March 16, through Friday, March 20, from 8:00 p.m. until 4:00 a.m.

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

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

  • Overnight, full on- and off-ramp closures on eastbound I-580 at Patterson Pass for construction beginning Sunday, March 15, through Friday, March 20, 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 beginning Sunday, March 15, through Friday, March 20, from 9:00 p.m. until 3:30 a.m.

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Motorists should expect 5-to-10-minute delays and use alternate routes whenever possible. All work is scheduled to occur as listed but is subject to change due to traffic incidents, weather, availability of equipment/materials, and construction-related issues.

For the safety of workers and other motorists, please Be Work Zone Alert. Caltrans also reminds motorists to #KnowBeforeYouGo by checking QuickMaps on your mobile device or visit quickmap.dot.ca.gov for real-time highway conditions.