California Department of Transportation

05/22/2026 | Press release | Distributed by Public on 05/22/2026 11:30

Traffic Advisory San Joaquin County 05/22/26

Traffic Advisory San Joaquin County 05/22/26

Published: May 22, 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:

  • Overnight, one-way traffic control from Old River Bridge (San Joaquin/Contra Costa County line) to Whiskey Slough Road in Holt for construction beginning Wednesday, May 27, though Friday, May 29, from 8:00 p.m. until 4:00 a.m.
  • 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: 12-hour full highway closure from Tracy Boulevard to Old River Bridge scheduled for Sunday, May 31, from 7:00 a.m. to 7:00 p.m.
    • 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, intermittent one-way traffic control from Escalon-Bellota Road to the San Joaquin/Stanislaus County line for guardrail work beginning Wednesday, May 27, through Friday, May 29, from 7:00 p.m. until 7:00 a.m.
  • Overnight, alternating, 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 Wednesday, May 27, through Thursday, May 28, from 9:00 p.m. until 6:00 a.m.
  • Overnight, alternating, full on-ramp closures from Center Street, Stanislaus Street, Wilson Way and Filbert Street to westbound SR-4/Crosstown Freeway for striping work beginning Wednesday, May 27, through Thursday, May 28, from 7:00 p.m. until 5:00 a.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 Wednesday, May 27, through Saturday, May 30, 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 Wednesday, May 27, through Friday, May 30, 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 26 - Lane Closures
Daytime One-Way Traffic Control

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

  • One-way traffic control from Gogna Road to Granada Lane for survey work on Friday, May 29, from 7:00 a.m. until 3:00 p.m.
  • One-way traffic control from Plain Duck Creek to Sandstone Creek Bridge for pavement work beginning Thursday, May 28, through Friday, May 29, from 7:00 a.m. until 4:00 p.m.
  • One-way traffic control from Shelly Road to Winner Road for pavement work beginning Wednesday, May 27, through Thursday, May 28, from 7:00 a.m. until 4:00 p.m.

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 Wednesday, May 27, through Thursday, May 28, from 8:00 p.m. until 4:00 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.

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/on-ramp closures from eastbound SR-120/Yosemite Avenue to southbound SR-99 for guardrail repairs on Wednesday, May 27, through Friday, May 29, from 10:00 p.m. until 5:00 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 Tuesday, May 26, through Friday, May 29, 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 Tuesday, May 26, through Friday, May 29, from 7:00 p.m. until 3:30 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 May 22, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on May 22, 2026 at 17:31 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]