Traffic Advisory San Joaquin County 05/08/26

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:

• Overnight, intermittent one-way traffic control from SR-99 to the San Joaquin/Stanislaus County line for fence work beginning Sunday, May 10, through Friday, May 15, from 7:00 p.m. until 7:00 a.m.
• • The above closure is required as part of the SR-4 Farmington Highway Improvement Project. For details visit https://dot.ca.gov/caltrans-near-me/district-10/district-10-current-projects/10-1c050.
• 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.
  • Plan Ahead: 55-hour full highway closures from Roberts Road to Old River Bridge scheduled for July 10-13 and July 17-20, 2026.
• Overnight, full connector ramp closures from eastbound SR-4/Crosstown Freeway to southbound Interstate 5 for bridge work beginning Sunday, May 10, through Friday, May 15, 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, May 10, through Friday, May 15, 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 striping work beginning Sunday, May 10, through Friday, May 15, 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 striping work beginning Sunday, May 10, through Friday, May 15, 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- and off-ramp closures on northbound I-5 at SR-4/Charter Way for bridge work beginning Sunday, May 10, through Friday, May 15, from 8:00 p.m. until 5:00 a.m.
• Overnight, full off-ramp closures from southbound I-5 at SR-4/Charter Way for bridge work beginning Monday, May 11, through Friday, May 15, 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, May 10, through Friday, May 15, from 9:00 p.m. until 5:00 a.m. (eastbound) and from 8:00 p.m. to 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, May 11, through Saturday, May 16, 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, May 11, through Saturday, May 16, from 9:00 p.m. until 5:00 a.m. (northbound) and from 9:00 p.m. until 6:00 a.m. (southbound).

TThe 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, alternating lane closures on northbound and southbound SR-99 from Jack Tone Road to SR-120/Manteca Bypass for construction beginning Monday, May 11, through Friday, May 15, from 8:00 p.m. until 4:00 a.m. (northbound) and from 9:00 p.m. until 6:00 a.m. (southbound.)
• Overnight, full off-ramp closures from northbound SR-99 at Austin Road for paving operations beginning Monday, May 11, through Friday, May 15, from 9:00 p.m. until 5:00 a.m.
• • 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 eastbound SR-120/Yosemite Avenue to northbound and southbound SR-99 for bridge work beginning Monday, May 11, through Friday, May 15, from 10:00 p.m. until 5:00 a.m. (northbound) and from 9:00 p.m. until 6:00 a.m. (southbound.)
• • 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.