Yellow Line (BART)

Pittsburg/Bay Point–SFO/Millbrae line
Pittsburg/Bay Point station, the eastern terminus of the Pittsburg/Bay Point line.
Overview
Locale	California Delta East Bay San Francisco Peninsula Counties: Contra Costa, Alameda, San Francisco, and San Mateo Cities: Pittsburg, Bay Point, Concord, Pleasant Hill, Walnut Creek, Lafayette, Orinda, Oakland, San Francisco, Daly City, Colma, South San Francisco, San Bruno, and Millbrae
Termini	Pittsburg/Bay Point San Francisco International Airport (weekdays before 8pm) Millbrae (weekdays after 8pm, weekends)
Stations	26
Service
Type	Rapid transit
System	Bay Area Rapid Transit
Operator(s)	San Francisco Bay Area Rapid Transit District
History
Opened	May 21, 1973 (1973-05-21)
Technical
Line length	55.2 miles (88.8 km) (SFO/Millbrae)
Track gauge	5 ft 6 in (1,676 mm) (Indian gauge)
Operating speed	36.0 mph (57.9 km/h) (SFO/Millbrae)
Highest elevation	at grade, elevated, underground, underwater (Transbay Tube)
Route map Yellow Line Maintenance Yard Antioch Pittsburg Center eBART Pittsburg/​Bay Point Willow Pass through the Diablo Range SR 4 North Concord/​Martinez Concord   Concord Train Yard   Iron Horse Regional Trail Pleasant Hill/ Contra Costa Centre Contra Costa Canal Walnut Creek I-680 SR 24 Lafayette Orinda Berkeley Hills Tunnel Contra Costa County Alameda County SR 24 Rockridge ■ ■ to Richmond MacArthur southbound transfer I-580 I-980 / SR 24 19th Street Oakland northbound transfer 12th Street Oakland City Center ■ ■ to Berryessa/​North San José ■ to Dublin/​Pleasanton 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 Colma Colma Maintenance Yard SR 82 El Camino Real South San Francisco Centennial Way Trail San Bruno Caltrain to San Francisco US 101 San Francisco International Airport Millbrae evenings only Caltrain to Tamien & San Jose All stations are accessible

The Pittsburg/Bay Point–SFO/Millbrae line is a Bay Area Rapid Transit (BART) line in the San Francisco Bay Area that runs from Pittsburg/Bay Point station to the SFO and Millbrae stations. It has 26 stations in Pittsburg, Bay Point, Concord, Pleasant Hill, Walnut Creek, Lafayette, Orinda, Oakland, San Francisco, Daly City, Colma, South San Francisco, San Bruno, and Millbrae.

BART colors this line yellow on maps but does not refer to it by color. It is commonly called the Pittsburg/Bay Point line, or alternatively the Concord line for its original terminus.

This line runs to Millbrae station after 8pm on weekdays and all day on weekends when the Richmond–Daly City/Millbrae line terminates at Daly City or is not running. At other times, SFO–Millbrae passengers can transfer between the Richmond–Daly City/Millbrae line and this line at San Bruno station.

The Pittsburg/Bay Point–SFO/Millbrae line was the second of BART's five lines to open. Service from Concord to MacArthur began on May 21, 1973. The line was extended to Daly City when the Transbay Tube opened on September 16, 1974. The North Concord/Martinez, Colma, and Pittsburg/Bay Point stations were added in 1995-1996.

This line has BART's longest average train length with many ten-car trains on weekdays and eight/nine-car trains on evenings and weekends. It is BART's only line with short turn trains that augment the regular 15-minute-interval full-distance trains. Each weekday during peak hours, 15 short turn trains per direction terminate at Daly City, 24th St., or Montgomery to the west and Pleasant Hill or beyond to the east.

In March 2016, mysterious electrical surges caused several cars to be taken out of service on the tracks north of North Concord/Martinez station. On March 16, 2016, BART halted service to Pittsburg/Bay Point station and established a bus bridge between North Concord and Pittsburg/Bay Point. Limited service to Pittsburg/Bay Point resumed on March 21 and full service resumed on April 2.

SFO/Millbrae extension service

When the SFO/Millbrae extension opened on June 22, 2003, BART extended the Pittsburg/Bay Point–SFO/Millbrae line to Millbrae but bypassed SFO. BART rerouted this line to SFO in place of the Dublin/Pleasanton line on February 9, 2004, with service extended to Millbrae outside of weekday peak hours. 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 the Dublin/Pleasanton 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, and this line now terminates at SFO on weekdays, with service extended to Millbrae on evenings and weekends.

Pittsburg/Bay Point–SFO line's south-of-Daly City service

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

Expansion plans

As part of BART's East Contra Costa extension project, a new standard gauge stub line, dubbed eBART, will extend service to Antioch station in 2018. A new cross-platform interchange just east of the Pittsburg/Bay Point station will allow transfer between the Pittsburg/Bay Point–SFO/Millbrae line and the eBART line. eBART will run a fleet of Diesel Multiple Unit trains. Current proposals call for eBART to be eventually extended to Brentwood and Byron. This line may be converted to full third rail BART service at a later date.

Stations

Main article: List of Bay Area Rapid Transit stations

Station	Jurisdiction	County	Opened	Other BART lines
Pittsburg / Bay Point	Pittsburg / Bay Point	Contra Costa	1996	eBART (2018)
North Concord / Martinez	Concord		1995
Concord			1973
Pleasant Hill / Contra Costa Centre	Contra Costa Centre		1973
Walnut Creek	Walnut Creek		1973
Lafayette	Lafayette		1973
Orinda	Orinda		1973
Rockridge	Oakland	Alameda	1973
MacArthur			1972
19th Street Oakland			1972
12th Street Oakland City Center			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
Colma	Colma		1996
South San Francisco	South San Francisco		2003
San Bruno	San Bruno		2003
San Francisco International Airport	SFO		2003
Millbrae[a]	Millbrae		2003

Notes
^a The Pittsburg/Bay Point–SFO/Millbrae line services Millbrae station after 8pm on weekdays and all day on weekends only. The line terminates at SFO station until 8pm on weekdays.

References

Template:Attached KML/Yellow Line (BART)

KML is from Wikidata