California Department of Transportation

07/24/2026 | Press release | Distributed by Public on 07/24/2026 17:17

Traffic Advisory San Joaquin County 07/24/26

Traffic Advisory San Joaquin County 07/24/26

Published: Jul 24, 2026

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 (San Joaquin/Contra Costa County line) 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: 12-hour full highway closure from Roberts Road to Old River Bridge scheduled from 7:00 a.m. until 7:00 p.m. on Sunday, August 9, 2026.
    • Plan Ahead: 55-hour full highway closure from Roberts Road to Old River Bridge scheduled from 10:00 p.m. on August 14, until 5:00 a.m. on August 17, 2026.
  • Overnight, intermittent one-way traffic control from SR-99 to the San Joaquin/Stanislaus County line for pavement work beginning Sunday, July 26, through Friday, July 31, from 7:00 p.m. until 7:00 a.m.
  • Full connector ramp closure from eastbound SR-4/Crosstown Freeway to northbound SR-99 for drainage work beginning Tuesday, July 28, through Wednesday, July 29, from 8:00 a.m. until 1:00 p.m.

Interstate 5 - Ramp & Lane Closures
Closures From Hammer Lane 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, alternating lane closures on northbound and southbound I-5 from Hammer Lane to the San Joaquin/Sacramento County line for construction beginning Sunday, July 26, through Saturday, August 1, 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, July 26, through Saturday, August 1, from 9:00 p.m. until 5:00 a.m. (northbound) and from 9:00 p.m. until 6:00 a.m. (southbound).
    • Plan Ahead: Final traffic shift back to original lane configuration is scheduled for the weekend of July 31-August 2, 2026.

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 26 - Lane Closures
One-Way Traffic Control For Pavement Work

San Joaquin County - The California Department of Transportation (Caltrans) will perform various closures on State Route 26/Fremont Street (SR-26) for maintenance and construction work within San Joaquin County. Work will occur as follows:

  • Overnight, intermittent one-way traffic control from SR-99 to Murray Road for pavement work beginning Sunday, July 26, through Friday, July 31, from 8:00 p.m. until 5:00 a.m.
  • Long-term closure of the right shoulder at Jack Tone Road for pavement work through August 12, 2026.
  • One-way traffic control from Gogna Road to Granada Lane for survey work on Thursday, July 30, from 7:00 a.m. until 3:00 p.m.

State Route 88 - Lane Closures
One-Way Traffic Control For Bridge Work At Bear Creek

San Joaquin County - The California Department of Transportation (Caltrans) will perform various closures on State Route 88 (SR-88) for maintenance and construction work within San Joaquin County. Work will occur as follows:

  • Overnight, one-way traffic control at Bear Creek for bridge work beginning Sunday, July 26, through Friday, July 31, from 9:00 p.m. until 6:00 a.m.
  • Overnight, one-way traffic control at Nathelle Lane for utility work beginning Wednesday, July 29, through Thursday, July 30, from 9:00 p.m. until 5:00 a.m.

State Route 99 - Ramp & Lane Closures
Overnight Closures In Manteca & Stockton

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 Sunday, July 26, through Friday, July 31, from 9:00 p.m. until 4:00 a.m. (northbound) and from 10:00 p.m. until 6:00 a.m. (southbound.)
  • Overnight, full off-ramp closures from northbound SR-99 at Austin Road for bridge work beginning Monday, July 27, through Friday, July 31, 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.
  • Full off-ramp closure from northbound SR-99 at Liberty Road for slope repair work on Tuesday, July 28, from 7:00 a.m. until 4:00 p.m.
  • Overnight, full on- and off-ramp closures on northbound SR-99 at SR-26/Fremont Street for pavement work beginning Sunday, July 26, through Friday, July 31, from 8:00 p.m. until 5:00 a.m.
  • Full off-ramp closures from northbound SR-99 at SR-26/Fremont Street for drainage work on Monday, July 27, from 8:00 a.m. until 1:00 p.m.

State Route 120 - Ramp Closures
Overnight Closures 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 southbound SR-99 for construction beginning Monday, July 27, through Friday, July 31, from 10:00 p.m. until 4:00 a.m.

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.

California Department of Transportation published this content on July 24, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on July 24, 2026 at 23:17 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]