Antioch: The California Department of Transportation and the Contra Costa Transportation Authority are constructing two new connector ramps, one connecting westbound State Route 4 to northbound SR-160, and one connecting southbound SR-160 to eastbound SR-4 in Contra Costa County.
Part of this construction work entails adjustment of temporary bridge supports that span over SR-4. In order to ensure crew and public safety during this work, the contractor will close all lanes of SR-4 in the eastbound and westbound directions between SR-4/SR-160 connector ramp and Laurel Road.
These closures are scheduled to take place on the evenings of March 1 and March 2 from 11:59 pm to 5:00 am.
The detour for this work will be as follows:
- On Sunday night, March 1, westbound motorist will be directed off the highway at the Laurel Road on-ramp and redirected to westbound SR-4 via the entrance of southbound SR-160.
- On Monday night, March 2, eastbound motorists will be directed off the highway at the SR-160 off-ramp and redirected to return to eastbound SR-4 via the Laurel Road on-ramp.
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 vehicle ahead of you.
