The Contra Costa Transportation Authority and Caltrans will conduct overnight highway and connector ramp closures in the state Highway 4/Interstate Highway 680 interchange starting Thursday night.

BRENTWOOD — Eastbound Highway 4 drivers will be able to use the newly constructed bridge and ramps at Balfour Road for the first time this weekend, with the first phase of the $42.7 million ...

The Balfour project was funded through Measure J funds, as well as East Contra Costa Regional Fee and Financing Authority and Contra Costa Water District.

Afternoon commuters travel along Highway 4 at the Interstate 680 interchange in Martinez, Calif., on Thursday, April. 11, 2013. (Susan Tripp Pollard/Staff Archives) By Gary Richards | Bay Area ...

Q: Finally after waiting for years, they are redoing the interchange at Interstate 680 and Highway 4, considered by some to be the most dangerous in the Bay Area. Unfortunately, Caltrans has lived ...