Contra Costa County is a county located in the U.S. state of California, in the East Bay of the San Francisco Bay Area. As of the 2020 United States Census, the population was 1,165,927. The county seat is Martinez. It occupies the northern portion of the East Bay region of the San Francisco Bay Area and is primarily suburban. The county's name refers to its position on the other side of the bay from San Francisco. Contra Costa County is included in the San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area.
AC Transit is an Oakland-based public transit agency serving the western portions of Alameda and Contra Costa counties in the East Bay of the San Francisco Bay Area. AC Transit also operates "Transbay" routes across San Francisco Bay to San Francisco and selected areas in San Mateo and Santa Clara counties. AC Transit is constituted as a special district under California law. It is governed by seven elected members. It is not a part of or under the control of Alameda or Contra Costa counties or any local jurisdictions.
WestCAT is a public transportation service in western Contra Costa County. It is a service of the Western Contra Costa Transit Authority.
Wheels is a public bus service in the Tri-Valley region (southeast Alameda County) of the San Francisco Bay Area in California, United States. It is operated by the Livermore Amador Valley Transit Authority (LAVTA). Wheels operates local and limited-stop service in Dublin, Pleasanton, and Livermore, with limited service into Contra Costa County along Interstate 680. The LAVTA was formed in 1985; service began in Dublin and Pleasanton in 1986. In 1987, it took over the 1978-opened Rideo service in Livermore. In 2023, the system had a ridership of 1,289,600, or about 5,100 per weekday as of the fourth quarter of 2023.
Lamorinda is an area within Contra Costa County, California in the United States. The name is a portmanteau from the names of the three cities that make up the region: Lafayette, Moraga and Orinda.
The East Bay is the eastern region of the San Francisco Bay Area and includes cities along the eastern shores of the San Francisco Bay and San Pablo Bay. The region has grown to include inland communities in Alameda and Contra Costa counties. With a population of roughly 2.5 million in 2010, it is the most populous subregion in the Bay Area.
Golden Gate Transit (GGT) is a public transportation system serving the North Bay region of the San Francisco Bay Area in California, United States. It primarily serves Marin County, Sonoma County, and San Francisco, and also provides limited service to Contra Costa County. In 2023, Golden Gate Transit had a ridership of 1,366,600, or about 4,200 per weekday as of the fourth quarter of 2023.
The Yellow Line is a Bay Area Rapid Transit (BART) line in the San Francisco Bay Area that runs between Antioch and San Francisco International Airport (SFO). Some morning trains and all trains after 9 pm are extended from SFO to serve Millbrae station when the Red Line is not running. It serves 28 stations in Antioch, Pittsburg, Bay Point, Concord, Pleasant Hill, Walnut Creek, Lafayette, Orinda, Oakland, San Francisco, Daly City, Colma, South San Francisco, San Bruno, and Millbrae. It is the most-used BART line, and the only line with additional trains on weekdays.
Walnut Creek station is an elevated Bay Area Rapid Transit (BART) station in Walnut Creek, California, served by the Yellow Line. The station is located north of downtown Walnut Creek, adjacent to Interstate 680 and near the Ygnacio Valley Road and California Boulevard arterial roads.
Pleasant Hill/Contra Costa Centre station is a Bay Area Rapid Transit (BART) station serving the Contra Costa Centre Transit Village in Contra Costa Centre, California, just north of Walnut Creek and just east of Pleasant Hill. It is served by the Yellow Line.
Concord station is a Bay Area Rapid Transit (BART) station in Concord, California. The station is located between the downtown business district to the west and residential neighborhoods to the east. Concord station has a single elevated island platform and is served by the Yellow Line.
Hayward station is a Bay Area Rapid Transit (BART) station in Hayward, California, serving Downtown Hayward and the surrounding areas. It is served by the Orange and Green lines. The elevated station has two side platforms. A two-lane bus terminal is located on the northeast side of the station. A pedestrian tunnel under the Union Pacific Railroad Oakland Subdivision connects the fare lobby to a parking lot and a five-level parking garage.
Dumbarton Express is a regional public transit service in the San Francisco Bay Area connecting Alameda, San Mateo, and Santa Clara Counties via the Dumbarton Bridge, the system's namesake. The bus service is funded by a consortium of five transit agencies. Dumbarton Express is administered by AC Transit and operated under contract by MV Transportation.
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 Antioch, Pittsburg Center, 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. In 2023, the system had a ridership of 1,304,700, or about 4,800 per weekday as of the fourth quarter of 2023.
The All Nighter is a night bus service network in the San Francisco Bay Area, California. Portions of the service shadow the rapid transit and commuter rail services of BART and Caltrain, which are the major rail services between San Francisco, the East Bay, the Peninsula, and San Jose. Neither BART nor Caltrain operate owl service due to overnight track maintenance; the All Nighter network helps fill in this service gap. The slogan is, "Now transit stays up as late as you do!"
Hercules Transit Center is a major commuter hub in the western Contra Costa County city of Hercules, California. It is anchored by WestCAT bus services. The center was originally on San Pablo Avenue. In August 2009, the transit center was relocated to the other side of I-80 with additional paid parking, which is $3/day.
SolTrans, officially Solano County Transit, is a Joint Powers Authority that provides public transportation service to the southern Solano County cities of Vallejo and Benicia. SolTrans was established in 2011 and is the result of a merger between Vallejo Transit and Benicia Breeze. In 2023, the system had a ridership of 954,200, or about 3,700 per weekday as of the fourth quarter of 2023.
Tempo is a bus rapid transit (BRT) service in Oakland and San Leandro in California. It is operated by AC Transit as Line 1T. The route has dedicated lanes and center-boarding stations along much of the corridor, prepaid fares, signal preemption, and all-door boarding. It is AC Transit's busiest bus route, with an average of 13,615 riders boarding each weekday in Fall 2022.
