Open Access Articles- Top Results for Tri Delta Transit

Tri Delta Transit

Tri Delta Transit
Parent Eastern Contra Costa Transit Authority[1]
Founded 1977[1]
Headquarters 801 Wilbur Ave, Antioch
Locale Contra Costa County, California
Service type bus service, paratransit
Fleet 69 transit bus
23 paratransit
6 med vans
10 commuter bus
Daily ridership 10,000[1]
Operator First Transit[1]

Tri Delta Transit, also known as Eastern Contra Costa Transit Authority, is the local public transportation provider for the eastern area of Contra Costa County in the San Francisco Bay Area of California, U.S.A.. It provides local bus service in the communities of Bay Point, Pittsburg, Antioch, Oakley, Brentwood, Discovery Bay, and Byron. 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.

Overview of fixed-route service

Tri Delta Transit operates in Eastern Contra Costa County and serves the cities of Antioch, Oakley, Brentwood, Byron, Discovery Bay, Bay Point, Pittsburg, Martinez, and Concord. Tri Delta Transit operates local bus routes (including express route 300) on weekdays, local bus routes on weekends/holidays, and shuttle service to San Francisco 49ers home games.[2]

Major transfer points for the majority of Tri Delta Transit's routes include:

  • Brentwood Park & Ride in Brentwood
  • Hillcrest Park & Ride in Antioch
  • Pittsburg Park & Ride in Pittsburg
  • Pittsburg/Bay Point BART station in Pittsburg
  • Los Medanos College in Pittsburg

Days and hours of service


Weekday service is provided on all routes except 392, 393, 394, and 395 which operate only on weekends and holidays.

Route Number Direction Terminals Route Map Notes
North/East Terminal South/West Terminal
Express Service to Martinez
East-West Pittsburg/Bay Point BART Martinez Amtrak Route 200
Concord Route
East-West Pittsburg/Bay Point BART Concord BART Route 201 <span id="201"/>[201]
Express Commuter to BART
East-West Brentwood Park & Ride Pittsburg/Bay Point BART Route 300
379 East-West Antioch Park & Ride Deer Valley Kaiser Route 379
380 East-West Tri Delta Transit Pittsburg/ Bay Point BART Route 380
Oakley Loop
Loop Antioch Park & Ride - Neroly /Brown Route 383 <span id="383"/>[383]
385 East-West Antioch Park & Ride Brentwood Park & Ride Route 385
386 East-West Discovery Bay Park & Ride Brentwood Park & Ride Route 386
387 East-West Tri Delta Transit Pittsburg/ Bay Point BART Route 387
388 East-West Pittsburg/ Bay Point BART Deer Valley Kaiser Route 388
Bay Point
Loop Pittsburg/ Bay Point BART - Wharf & Pacifica Route 389
Express Commuter to BART
East-West Antioch Park & Ride Pittsburg/ Bay Point BART Route 390 <span id="390"/>[390]
391 East-West Brentwood Park & Ride Pittsburg/ Bay Point BART Route 391

<span id="note"/>

[201]: Willow Pass Business Park service only during peak periods;
[383]: Cypress/ Mellowood service only during peak periods, clockwise loop only operates two morning trips;
[390]: Operates during commute hours only;

Weekends and holidays

Service is provided on the following 4 routes:

Route Number Terminals Route Map
East Terminal West Terminal
392 Antioch Park & Ride Pittsburg/ Bay Point BART Route 392
393 Brentwood Park & Ride Mariners Cove/ Pacifica
Before 10pm
Pittsburg/ Bay Point BART
After 10pm
Route 393
394 Antioch Park & Ride Pittsburg/Bay Point BART Route 394
395 Loop Antioch Park & Ride Antioch Park & Ride Route 395

These routes operate on weekends and the following days:[3]

  • New Year's Day (Actual & Observed)
  • Martin Luther King Jr. Day
  • President's Day
  • Memorial Day
  • Independence Day (Actual & Observed)
  • Labor Day
  • Veterans Day (Actual & Observed)
  • Thanksgiving Day
  • Day after Thanksgiving
  • Christmas Eve
  • Christmas Day (Actual & Observed)


The current fares are shown below.[4]

Local Route

Type Adult (17-64)/Youth (6-16) Senior (65+)/Disabled
Single ride (no transfers) US$2.00 US$0.85
Single ride - Route 300 (no transfers) US$2.50 US$1.35
24 Hour Pass US$3.35 US$1.35
20 ride Pass US$33.00 US$17.00
Transfer from County Connection buses FREE FREE
Transfer from BART US$1.25 US$0.85
Transfer from BART - Route 300 US$1.75 US$1.35
  • † Children 5 & under ride free when accompanied by a paying customer.
  • ‡ Appropriate identification must be presented to obtain the discounted Senior/Disabled fare: DMV issued identification (senior fare), Regional Transit Discount Card (disabled or senior fare), Medicare card (disabled fare) or any transit issued disabled identification (disabled fare).
  • ₮ In order to facilitate passenger connections between Tri Delta Transit and other transit agency at a shared bus stop, inter agency transfer slips are issued upon request at the time the proper fare is paid.

Other passes

Tri Delta Transit offers for sale several bus passes which provide a discount over cash fare:

Events Shuttles

Type Adult (16+) Youth (6-15)
49ers Express Shuttle
Single ride Advanced purchase - US$17.00
Purchased on bus - US$20.00
Season Pass US$135.00 US$85.00
  • † Children 5 & under ride free when accompanied by a fare paying adult. One free kid fare per paying adult.

Intermodal Transfers and Regional Connectivity

The local transportation demand management organization 511 Contra Costa also provides information for intermodal transfers throughout the county, and works closely with Tri Delta Transit to improve regional transit.


External links