State of California • Department of Transportation
NEWS RELEASE

San Joaquin County
State Route 4 – Lane & Ramp Closures
From San Joaquin River To Filbert Street
San Joaquin County – The California Department of Transportation (Caltrans) will perform various closures on State Route 4 (SR-4) for maintenance and construction operations. Work will occur as follows:
- One-way traffic control at San Joaquin River (Garwood Bridge) for bridge inspection on Wednesday, April 23, from 8:00 a.m. until 3:00 p.m.
- Overnight closures of the #3 (right-middle), #4 (right) and auxiliary lanes of westbound SR-4/Crosstown Freeway from SR-99 to Interstate 5 for soundwall work beginning Monday, April 21, through Friday, April 25, from 8:00 p.m. until 4:00 a.m.
- Overnight, full on-ramp closures from Filbert Street to westbound SR-4/Crosstown Freeway for soundwall work beginning Monday, April 21, through Friday, April 25, from 7:00 p.m. until 5:00 a.m.
Interstate 5 – Lane & Ramp Closures
Closures From Mathews Road 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 Mathews Road to northbound I-5 for bridge work beginning Monday, April 21, through Friday, April 25, from 9:00 p.m. until 6:00 a.m.
- Overnight, full off-ramp closures from southbound I-5 at Mathews Road for bridge work beginning Monday, April 21, through Friday, April 25, from 9:00 p.m. until 4:00 a.m.
- Overnight, full on-ramp closures at French Camp Road for bridge work beginning Monday, April 21, through Friday, April 25, from 9:00 p.m. until 6:00 a.m. (northbound) and from 8:00 p.m. until 4:00 a.m. (southbound.)
- Overnight, full off-ramp closures from northbound I-5 at Downing Avenue for bridge work beginning Monday, April 21, through Friday, April 25, from 9:00 p.m. until 6:00 a.m.
- Overnight, full on- and off-ramp closures on southbound I-5 at Downing Avenue for bridge work beginning Monday, April 21, through Friday, April 25, from 8:00 p.m. until 4:00 a.m.
- 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 21, through Friday, April 25, from 9:00 p.m. until 5:00 a.m. (northbound) and from 9:00 p.m. until 6:00 a.m. (southbound).
- Overnight, 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 21, through Friday, April 25, 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 & Shoulder Closures
One-Way Traffic Control At Various Locations
San Joaquin County – The California Department of Transportation (Caltrans) will perform various closures on State Route 26 (SR-26) for maintenance and construction operations. Work will occur as follows:
- Shoulder closures on eastbound SR-26 at Darrigo Lane for shoulder work on Friday, April 25, from 6:00 a.m. until 4:00 p.m.
- Shoulder closures on westbound SR-26 at Darrigo Lane and at Jack Tone Road for shoulder work beginning Monday, April 21, through Friday, April 25, from 6:00 a.m. until 5:00 p.m.
- One-way traffic control at Jack Tone Road for shoulder work beginning Monday, April 21, through Friday, April 25, from 7:00 a.m. until 3:00 p.m.
- One-way traffic control at Flood Road/Front Street for shoulder work beginning Monday, April 21, through Friday, April 25, from 7:00 a.m. until 3:00 p.m.
State Route 88 – Lane Closures
One-Way Traffic Control
San Joaquin County – The California Department of Transportation (Caltrans) will perform various closures on State Route 88 (SR-88) for maintenance and construction operations. Work will occur as follows:
- One-way traffic control at Calaveras River for bridge work beginning Monday, April 21, through Thursday, April 24, from 8:30 a.m. until 3:00 p.m.
State Route 99 – Ramp And Lane Closures
Overnight Full Closures Of Southbound Sr-99 At Acampo Road
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, full closures of southbound SR-99 at Acampo Road for bridge work on Friday, April 18, and on Sunday, April 20, from 9:00 p.m. until 5:00 a.m. All northbound lanes will remain open.
- Detour: Motorists will be directed to exit southbound SR-99 at Acampo Road and return to southbound SR-99 using the Acampo Road on-ramp.
- Overnight, alternating lane closures on northbound SR-99 from Jack Tone Road to SR-99/120 Interchange for k-rail installation beginning Wednesday, April 23, through Friday, April 25, from 8:00 p.m. until 4:00 a.m.
- Overnight, alternating lane closures on southbound SR-99 from SR-99/120 Interchange to Jack Tone Road for k-rail installation beginning Thursday, April 24, through Friday, April 25, from 9:00 p.m. until 6:00 a.m.
- Overnight, full on and off-ramp closures on northbound SR-99 at Austin Road for k-rail installation beginning Wednesday, April 23, through Friday, April 25, from 9:00 p.m. until 5:00 a.m.
- Full off-ramp closure from southbound SR-99 at Austin Road for utility work on Wednesday, April 23, from 10:00 a.m. until 12:00 p.m. (noon).
- Long term full closure of the Calaveras River/Frontage Road Overcrossing of SR-99 due to bridge work. Estimated completion date for bridge repairs is May 2025. Please seek alternate route.
- Overnight, alternating lane closures on southbound SR-99 from Peltier Road to Mokelumne River/Frontage Road for bridge work beginning Sunday, April 20, through Friday, April 25, from 9:00 p.m. until 5:00 a.m., and on Friday, April 25, through Sunday, April 27, from 9:00 p.m. until 9:00 a.m.
State Route 120 – Ramp & Lane Closures
Overnight Closure Of Eastbound Sr-120 Connector Ramp
San Joaquin County – The California Department of Transportation (Caltrans) will perform various closures on State Route 120 (SR-120) for maintenance and construction operations. Work will occur as follows:
- Overnight, full closure of the eastbound SR-120/Manteca Bypass connector ramp to southbound SR-99 for k-rail installation beginning at 10:00 p.m. on Thursday, April 24, through 5:00 a.m. on Friday, April 25.
- Alternating lane closures on westbound SR-120/Manteca Bypass from McKinley Avenue to Interstate 5 for bridge inspection beginning Monday, April 21, through Tuesday, April 22, 2025, from 9:00 a.m. until 3:00 p.m.