Tri Delta Transit provides over 2,500,000 trips each year to a population of nearly 230,000 residents in the 225 square miles of Eastern Contra Costa County. Tri Delta Transit operates 13 local bus routes Monday-Friday, 4 local bus routes on weekends, Express Route 300 commuter route, a door-to-door bus service for senior and disabled individuals and a 49ers sports service to home games at Candlestick Park.
There are 3 Transit Centers that serve Tri Delta Transit.
Transit Accessibility Services
Tri Delta Transit's fixed-route buses are wheelchair accessible, have tie-downs for wheelchairs, and priority seating available for senior and disabled individuals.
Tri Delta Transit also operates a paratransit service called Dial-a-Ride. Dial-a-Ride is a door-to-door transportation service for eligible senior and disabled individuals traveling in Eastern Contra Costa County. Tri Delta Transit's paratransit service follows the regional paratransit guidelines and offers both ADA and Non-ADA service to qualifying individuals. For more information on Dial-a-Ride, please call 925-754-6622.
RTC Regional Discount Card
RTC Processing Location
Customer Services: 801 Wilbur Avenue, Antioch, CA 94509
Phone: (925) 754-6622; TTY (925) 754-3695
Applications accepted Monday through Thursday 7 am – 6 pm, and Friday 8 am – 5 pm
Note: Before visiting a transit agency office, call to verify hours of operation and payment options.
TTY Users: You can contact any telephone number through the California Relay Service at 711.
511 Phone Service
From the Main Menu, use a shortcut to go directly to Tri Delta Transit by saying: "Tri Delta Transit"
From inside the Transit Agency menu, you can say any of the following agencies. If you want to use the touch-tone options, press the number "22" for Tri Delta Transit.
From inside the Paratransit Agency menu, you can say any of the following agencies. If you want to use the touch-tone options, press the number "24" for Tri Delta Transit Paratransit for Eastern Contra Costa County.
Clipper is currently accepted on Muni, BART, AC Transit, VTA, SamTrans, Caltrain and Golden Gate Transit and Ferry, and will eventually be accepted on all forms of Bay Area public transit. For information on using Clipper, please visit https://www.clippercard.com/ClipperWeb/trideltatransit/index.do