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Traffic Advisory San Joaquin County 04/10/26

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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 connector ramp closures from eastbound SR-4/Crosstown Freeway to southbound Interstate 5 for bridge work beginning Sunday, April 12, through Friday, April 17, from 8:00 p.m. until 6:00 a.m.
  • Overnight, full connector ramp closures from westbound SR-4/Crosstown Freeway to southbound Interstate 5 for bridge work beginning Sunday, April 12, through Friday, April 17, from 9:00 p.m. until 5:00 a.m.
  • Overnight, full on-ramp closures from Center Street, Stanislaus Street, Wilson Way and Filbert Street to westbound SR-4/Crosstown Freeway for pavement work beginning Sunday, April 12, through Friday, April 17, from 7:00 p.m. until 5:00 a.m.
  • Overnight, full on-ramp closures from El Dorado Street, Stanislaus Street, Wilson Way and Filbert Street to eastbound SR-4/Crosstown Freeway for pavement work beginning Sunday, April 12, through Friday, April 17, from 9:00 p.m. until 6:00 a.m.

Interstate 5 – Ramp & Lane Closures
Closures From Charter Way 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 on-ramp closures from SR-4/Charter Way to northbound I-5 for bridge work beginning Sunday, April 12, through Friday, April 17, from 8:00 p.m. until 5:00 a.m.
  • Overnight, full off-ramp closures from southbound I-5 to SR-4/Charter Way for bridge work beginning Sunday, April 12, through Friday, April 17, from 9:00 p.m. until 5:00 a.m.
  • Overnight, full connector ramp closures from northbound I-5 to eastbound and westbound SR-4/Crosstown Freeway for bridge work beginning Sunday, April 12, through Friday, April 17, from 9:00 p.m. until 5:00 a.m. (eastbound) and from 8:00 p.m. until 6:00 a.m. (westbound.)
  • Overnight, alternating lane closures on northbound and southbound I-5 from Hammer Lane to the San Joaquin/Sacramento County line for construction beginning Monday, April 13, through Saturday, April 18, 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 Monday, April 13, through Saturday, April 18, 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 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 closures of the #3 (right) lane on northbound SR-99 from Jack Tone Road to SR-120/Manteca Bypass for construction beginning Sunday, April 12, through Tuesday, April 14, from 8:00 p.m. until 4:00 a.m.
  • Long-term, full off-ramp closure from northbound SR-99 at Austin Road for construction through Tuesday, April 14, 2026.
    • 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 Closures For Construction 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, connector ramp closures from westbound SR-120/Manteca Bypass to northbound I-5 for electrical work beginning Sunday, April 12, through Friday, April 17, from 8:00 p.m. until 4:00 a.m.

Interstate 205 – Ramp & Lane Closures
Overnight Closures At Grant Line Road For Construction

San Joaquin County – The California Department of Transportation (Caltrans) will perform various closures on Interstate 205 (I-205) for maintenance and construction work within San Joaquin County. Work will occur as follows:

  • Overnight, full on-ramp closures from Grant Line Road to eastbound I-205 for construction (pile driving) beginning Monday, April 13, through Wednesday, April 15, from 2:00 a.m. until 6:00 a.m.
  • Overnight closures of the #3 (right) lane on eastbound I-205 at Grant Line Road for construction (pile driving) beginning Monday, April 13, through Wednesday, April 15, from 2:00 a.m. until 6:00 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, April 12, through Friday, April 17, 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, April 12, through Friday, April 17, 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.