Blue Line (BART)

Dublin/Pleasanton–Daly City line
A Dublin/Pleasanton line train in the I-580 median in Castro Valley
Overview
Locale	East Bay San Francisco Peninsula Counties: Alameda, San Francisco, and San Mateo Cities: Dublin, Pleasanton, Castro Valley, San Leandro, Oakland, San Francisco, and Daly City
Termini	Dublin/Pleasanton Daly City
Stations	18 (plus 1 proposed)
Service
Type	Rapid transit
System	Bay Area Rapid Transit
Operator(s)	San Francisco Bay Area Rapid Transit District
History
Opened	May 10, 1997
Technical
Line length	35.7 miles (57.5 km)
Track gauge	5 ft 6 in (1,676 mm) (Indian gauge)
Operating speed	34.5 mph (55.5 km/h)
Highest elevation	at grade, elevated, underground, underwater (Transbay Tube)
Route map Blue Line Valley Link 2027 Dublin/ Pleasanton Iron Horse Regional Trail I-680 West Dublin/​Pleasanton San Leandro Hills Castro Valley I-238 / I-580 ■ ■ to Berryessa/​North San José Bay Fair transfer San Leandro SR 112 / SR 61 ■ to OAK Coliseum Fruitvale Lake Merritt ■ to Richmond ■ to Antioch, ■ to Richmond I-880 West Oakland Amtrak Transbay Tube Alameda County San Francisco I-80 Bay Bridge Embarcadero Montgomery Street Union Square/ Market Street Powell Street Civic Center/​UN Plaza 16th Street Mission 24th Street Mission Glen Park | San Jose/ Glen Park I-280 Balboa Park San Jose and Geneva San Francisco San Mateo County Daly City ■ ■ to SFO/Millbrae All stations are accessible

The Dublin/Pleasanton–Daly City line is a Bay Area Rapid Transit (BART) line in the San Francisco Bay Area that runs from Dublin/Pleasanton to Daly City. It has 18 stations in Dublin, Pleasanton, Castro Valley, San Leandro, Oakland, San Francisco, and Daly City.

BART colors this line blue on maps but does not refer to it by color. It is commonly called the Dublin/Pleasanton line.

Of BART's five lines, the Dublin/Pleasanton–Daly City line was the most recent line to open. Service began when the Dublin/Pleasanton extension opened on May 10, 1997. The West Dublin/Pleasanton infill station was added to the line on February 19, 2011.

SFO/Millbrae extension service

When the SFO/Millbrae extension opened on June 22, 2003, BART extended the Dublin/Pleasanton–Daly City line to SFO. BART truncated this line back to Daly City and rerouted the Pittsburg/Bay Point line to SFO in its place on February 9, 2004. San Mateo County is not a member of the San Francisco Bay Area Rapid Transit District, so SamTrans funded the county's BART service. When the extension's lower-than-expected ridership caused SamTrans to accrue deficits, BART agreed to SamTrans' request to operate only this line south of Daly City effective September 12, 2005.

SamTrans and BART reached an agreement in February 2007 in which SamTrans would transfer control and financial responsibility of the SFO/Millbrae extension to BART. In return, BART would receive additional fixed funding from SamTrans and other sources. BART has since again increased service south of Daly City, but this line now terminates at Daly City.

Dublin/Pleasanton–Daly City line's south-of-Daly City service

Date of change	Service south of Daly City
June 22, 2003	Daly City–SFO
February 9, 2004	none
September 12, 2005	Daly City–SFO/Millbrae
January 1, 2008	Daly City–Millbrae (evenings/weekends)
September 14, 2009	none

Stations

Main article: List of Bay Area Rapid Transit stations

Station	Jurisdiction	County	Opened	Other BART lines
Dublin / Pleasanton	Dublin / Pleasanton	Alameda	1997
West Dublin / Pleasanton			2011
Castro Valley	Castro Valley		1997
Bay Fair	San Leandro		1972
San Leandro			1972
Coliseum	Oakland		1972
Fruitvale			1972
Lake Merritt			1972
West Oakland			1974
Embarcadero	San Francisco	San Francisco	1976
Montgomery Street			1973
Powell Street			1973
Civic Center / UN Plaza			1973
16th Street Mission			1973
24th Street Mission			1973
Glen Park			1973
Balboa Park			1973
Daly City	Daly City	San Mateo	1973