page_title: Tri Delta Transit
section_title: Overview of fixed-route service
hierarchical_section_title: Tri Delta Transit / Overview of fixed-route service
caption_attribution_description: English: Tri Delta Transit bus is Pittsburg in February 2018
context_page_description: Tri Delta Transit, formally the Eastern Contra Costa Transit Authority, is a joint powers agency of the governments of Pittsburg, Antioch, Oakley, Brentwood, and Contra Costa County that provides bus service for the eastern area of Contra Costa County, California, United States. Tri Delta Transit local buses connect to the BART rapid transit system at Pittsburg/Bay Point and Concord. Tri Delta Transit buses also connect with County Connection bus service, WestCAT bus service, Delta Breeze bus service and Amtrak at shared bus stops.
context_section_description: Tri Delta Transit operates in eastern Contra Costa County and has stops in Antioch, Oakley, Brentwood, Byron, Discovery Bay, Bay Point, Pittsburg, Martinez, and Concord.  Tri Delta Transit operates local and express routes on weekdays, local routes on weekends/holidays, and shuttle service to San Francisco 49ers home games.
  Major transfer points for the majority of Tri Delta Transit's routes include:
  Brentwood Park & Ride in Brentwood
  Antioch BART Station in Antioch
  Pittsburg Center BART Station in Pittsburg
  Pittsburg/Bay Point BART Station in Pittsburg
  Los Medanos College in Pittsburg
caption: Tri Delta Transit bus in Pittsburg
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