California Department of Transportation

08/19/2026 | Press release | Distributed by Public on 08/19/2026 17:57

State Route 99 & Sr-4 Highway And Connector Ramp Closures

State Route 99 & Sr-4 Highway And Connector Ramp Closures

Published: Aug 19, 2026

Early Morning Closures For Overhead Sign Installations In Stockton - August 23 & 30, 2026

San Joaquin County - The California Department Of Transportation (Caltrans) Will Soon Perform Various Closures On State Route 99 (Sr-99) And Sr-4/Crosstown Freeway For The Installation Of New Overhead Guide Signs In Stockton. Work Will Occur As Follows:

Sunday, August 23, 2026 - 6:00 A.M. - 10:00 A.M.

Northbound Sr-99 Will Be Reduced From Three Lanes To One Lane On The Main Line Between Sr-26/Fremont Street And Sr-88/Waterloo Road.

Additionally, The Connector Ramp From Eastbound Sr-4/Crosstown Freeway To Northbound Sr-99 Will Also Be Closed.

Detour: Eastbound Sr-4 To Southbound Sr-99, Exit At Golden Gate Avenue, And Return To Northbound Sr-99.

Sunday, August 30, 2026 - 5:30 A.M. - 10:00 A.M.

All Lanes Of Northbound Sr-99 Will Be Closed At Sr-26/Fremont Street.

Detour: Motorists Will Exit Northbound Sr-99 At Sr-26/Fremont Street And Use The Sr-26/Fremont Street On-Ramp To Return To Northbound Sr-99.

All Work Is Scheduled To Begin As Listed, But Is Subject To Change Due To Traffic Incidents, Weather, Availability Of Equipment, And/Or Materials And Construction Related Issues.

For The Safety Of Workers And Other Motorists, Please Be Work Zone Alert.

For Information On Caltrans Projects Statewide, Please visit Build.ca.gov.

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 August 19, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on August 19, 2026 at 23:57 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 If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]