The California Department of Transportation (Caltrans) and the Contra Costa Transportation Authority (CCTA) are widening State Route 4 (SR-4) through Pittsburg and Antioch. As part of this construction work, the contractor will be closing a segment of State Route 160 (SR-160) to install new traffic delineation interfacing with the newly completed westbound SR-4 lanes. In order to ensure crew and public safety during this work, the contractor will close all lanes of SR-160 in the southbound direction between Main Street / E. 18th Street and the SR-4 / SR-160 connector ramp. This closure will occur on the evening of July 31st from 10:00 pm to 4:00 am.
The detour for this work will be as follows:
- Southbound motorists will be directed off the highway at Main Street/ E. 18th Street proceeding west on E. 18th Street to Hillcrest Avenue. Motorist will then be directed to proceed south on Hillcrest Avenue to the SR-4 westbound
on ramp, please see attached.
Motorists are advised to expect delays and allow extra time for their commute. Please drive with caution through the detours and leave a safe traveling distance between your vehicle and the vehicle ahead of you.
The SR-4 Widening Project includes over $540 million in State, Federal, and Contra Costa Measure J sales tax, and other local funds to widen SR-4 from four to eight lanes between Loveridge Road and SR-160. The combined effort of Caltrans and the Contra Costa Transportation Authority on projects in the SR-4 corridor will reduce congestion, create a safer roadway, improve operations, and reduce traffic delays on this important east-west connector. When completed, the SR-4 highway median will be used to extend BART service from Pittsburg/Bay Point to a new Antioch station at Hillcrest Avenue.
Caltrans and CCTA appreciate your patience as we work to improve the highways. For the most current information on all SR-4 corridor closures please visit our website at: http://4eastcounty.org.