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 February 25, 26, and 27th from 11:59pm to 5:00 am.
The detour for this work will be as follows:
- Eastbound motorist 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.
- Westbound motorist will be directed off the highway at Laurel Road on-ramp and redirected to westbound SR-4 via the entrance of southbound SR-160.
FULL FREEWAY CLOSURES:
State Route 4 (SR4):
SR4 will be closed in the eastbound and westbound directions between the SR4/SR160 connector ramp and Laurel Road on Wednesday, Thursday and Friday evenings from 11:59 pm to 5:00 am.
State Route 160 (SR160):
There are no full freeway closures of SR160 planned for this week.
HIGHWAY LANE CLOSURES:
State Route 4 (SR4):
There will be highway lane closures in the westbound direction of SR4 between California Avenue/Harbor Street and Bailey Road Monday through Friday between 11:00 am and 5:00 pm and on Friday evening from 6:00 pm to 10:00 am.
There will be highway lane closures in the westbound direction of SR4 between Somersville Road and Loveridge Road on Wednesday, Thursday and Friday from 11:00 am to 5:00 pm.
There will be highway lane closures in the eastbound and westbound directions of SR4 between the SR4/SR160 connector ramp and Laurel Road on Wednesday, Thursday and Friday evenings from 10:00 pm to 6:00 am.
State Route 160 (SR160):
There are no Highway lane closures of SR160 planned for this week.
RAMP CLOSURES:
State Route 4 (SR4):
The SR4 eastbound on ramp at Sand Creek Road will be closed on Monday evening from 10:00 pm to 1:00 am.
The will be lane closures on the SR4 eastbound off ramp at Sand Creek Road on Tuesday from 7:30 am to 3:30 pm.
There will be lane closures on the SR4 westbound off ramp at Sand Creek Road on Tuesday from 7:30 am to 3:30 pm.
State Route 160 (SR160):
There are no ramp closures of SR160 planned for this week.
LOCAL STREET CLOSURES:
There will be single lane closures on Lone Tree Way in both directions between Canada Valley Road and Jeffery Way Monday through Friday from 9:00 am to 3:00 pm.
There will be single lane closures on Sand Creek Road in both directions between the SR4 eastbound and westbound on and off ramps on Tuesday from 7:30 am to 3:30 pm.
Click here for a full PDF version of the planned lane closures fo this week.
