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Traffic Advisory San Joaquin County 10/09/26

Published:

State Route 4 – Lane Closures
One-Way Traffic Control

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 Whiskey Slough in Holt to the Old River Bridge (San Joaquin/Contra Costa County line) for paving work beginning Sunday, October 11, through Friday, Oct. 16, from 8:00 p.m. until 4:00 a.m.
    • Plan Ahead – 36-hour full highway closure of SR-4 from Roberts Road to Old River Bridge to begin at 10:00 p.m. on Friday, October 23, until 10:00 a.m. on Sunday, October 25, 2026.
    • The above closures are required as part of the SR-4 Delta Pavement Improvement Project. For details visit https://dot.ca.gov/caltrans-near-me/district-10/district-10-current-projects/10-1f320
  • Overnight, intermittent one-way traffic control from SR-99/Golden Gate Avenue to the San Joaquin/Stanislaus County line for pavement work beginning Sunday, Oct. 11, through Friday, Oct. 16, from 7:00 p.m. until 7:00 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 Sunday, Oct. 11, through Saturday, Oct. 17, 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, Oct. 11, through Saturday, Oct. 17, 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
One-Way Traffic Control For Striping Operations

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 striping operations beginning Tuesday, Oct. 13, through Friday, Oct. 16, from 8:00 p.m. until 5:00 a.m.
  • Overnight, intermittent one-way traffic control from Duncan Road to Flood Road/Front Street for striping operations beginning Tuesday, Oct. 13, through Friday, Oct. 16, from 8:00 p.m. until 5:00 a.m.

State Route 99 – Lane & Ramp Closures
Tree Work And Pavement Repairs Next Week

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:

  • Closure of the #3 (right) lane of northbound SR-99 from the Stanislaus/San Joaquin County line to Austin Road for tree work beginning Monday, Oct. 12, through Friday, Oct. 16, from 8:30 a.m. until 2:30 p.m.
  • Full on-ramp closure from Cherokee Road to northbound SR-99 for pavement work on Tuesday, Oct. 13, from 6:00 a.m. until 4:00 p.m.
  • Full on-ramp closure from Wilson Way to northbound SR-99 for pavement work on Monday, Oct. 12, from 6:00 a.m. until 4:00 p.m.
  • Alternating lane closures on northbound SR-99 at Calaveras River for pavement work beginning Monday, Oct. 12, through Tuesday, Oct. 13, from 6:00 a.m. until 4:30 p.m.

Interstate 205 – Ramp Closures
Overnight Closures For Drainage Work In Tracy

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:

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, Oct. 11, through Friday, Oct. 16, 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, Oct. 11, through Friday, Oct. 16, from 7:00 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.