Main Office Business Hours
Monday through Thursday 7:00 a.m. to 5:00 p.m.
Friday 7:00 a.m. to 4:00 p.m. (closed 12:00 p.m. to 1:00 p.m.)
Records Counter is closed on Fridays
Airports - Byron
500 Eagle Court
Byron, CA 94514
Phone: 844-Fly-ToUs (844-359-8687)
Fax: 925-513-0749
Capital Project Management
40 Muir Drive, 2nd Floor
Martinez, CA 94553
Phone: 925-957-2471
Fax: 925-228-2437
Purchasing
40 Muir Road, 2nd Floor
Martinez, CA 94553
Phone: 925-957-2496
Fax: 925-372-3643
Road Maintenance
Main Office
2475 Waterbird Way
Martinez, CA 94553
Phone: 925-313-7000
Fax: 925-313-7014
Surplus/Recycle
4785 Blum Road
Martinez, CA 94553
Phone: 925-335-3665