State Route 242 / Concord Avenue Interchange

Central County
PROJECT BUDGET $32.3 Million
Contra Costa Transportation Authority, Concord
Concord Avenue in the City of Concord
8,600 feet of sound wall were built to decrease noise pollution due to SR 242.
Improvements at the State Route 242/Concord Avenue interchange include a new northbound loop on-ramp, realignment of the existing southbound off-ramp, and construction of northbound and southbound auxiliarly lanes between the Concord Avenue and Grant Street/ Solano Way interchanges. These improvements include three new structures and the widening of two others, the widening of Concord Avenue and State Route 242, paving, restriping and new signals at the four off-ramp intersections. Approximately 8,600 feet of soundwall are constructed along both sides of State Route 242 to mitigate existing no ...more