CCTA is responsible for funding, planning, and executing projects that manage traffic congestion, improve public safety, and increase easy access to transit for all residents.


Mokelumne Trail Bicycle/Pedestrian Overcrossing

East County Dynamic Personal Micro Transit Project

Countywide Smart Signals

Charge Up Contra Costa

State Route 239 Project

Innovate 680

Contra Costa Electric Vehicle (EV) Readiness Blueprint

Accessible Transportation Strategic Plan Initiative

Bollinger Canyon Road – Iron Horse Trail Bicycle and Pedestrian Overcrossing

Interstate 680 HOV Completion and Express Lanes

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

San Pablo Dam Road/I-80 Interchange Improvement Project

Interstate 680 / State Route 4 Interchange Improvements

All Projects