State Route 4 Operational Improvements (I-680 to Bailey Road)

Central County
PROJECT BUDGET $175.5 Million
CCTA & City of Concord
SR4 between I-680 and Bailey Road in Concord.
Three of the Regional Transportation Planning Committees (West, Central and East) in Contra Costa County developed a corridor management plan for State Route 4 from I-80 in the City of Hercules to State Route 160 in the City of Antioch.
The State Route 4 (SR4) Freeway Performance Initiative (FPI)/Corridor Study Management Plan (CSMP) and the SR4 Integrated Corridor Analysis (ICA) identifi ed several elements to improve operations on SR4.

The SR4 Operation Improvements Project includes a continuation of a High Occupancy Vehicle (HOV) lane on eastbound SR4 from the northbound I-680 onramp to the start of the existing HOV lane just east of SR242, as well as the addition of several sections of mixed fl ow lanes on eastbound and westbound SR4 between SR242 and Bailey Road. The project will be constructed in two phases. ...more