Highway 4 at SR-160 Road Closure

February 25th – 27th

11:59pm – 5:00am


ANTIOCH, CA – The California Department of Transportation (Caltrans) and the COntra Costa Transportation Authority (CCTA) are constructing two new connector ramps, one connecting westbound State Route 4 (SR-4) to northbound SR-160, and one connecting southbound DR-160 to eastbound SR-4.  Part of this construction work entails the 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 DR-4/SR-160 connector ramp at Laurel Road.  These closures are scheduled to take place on the evenings of February 25th – 27th from 11:59pm to 5:00am.  


The detour for this work will be as follows:


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 Rd on-ramp.  


Westbound motorists will be directed off the highway at the Laurel Rd on-ramp and redirected to westbound SR-4 via the entrance of southbound SR-160.


See map below:

Motorists are advised to expect delays and allow extra time for their commute.  Please drive with caution through the detours and leave safe traveling distance between your vehicle and the vehicle ahead of you.