San Francisco, California/BART to San Francisco International Airport

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BART Extension to San Francisco International Airport

San Francisco, CA

(November 1999)

(click here for map)


The Bay Area Rapid Transit (BART) and San Mateo County Transit District (SamTrans) are constructing an 8.2-mile, 4-station, BART extension which proceeds southeast from the Colma BART Station through the cities of Colma, South San Francisco and San Bruno, and then continues south along the Caltrain right-of-way to the city of Millbrae. Approximately, 1.5 miles north of the Millbrae Avenue intermodal terminal, an east-west aerial "wye" (Y) stub will service the San Francisco International Airport (SFIA). This project is now estimated by FTA to cost up to $1.510 billion (escalated dollars). This total includes an unfunded $27 million Capital Reserve Account (CAPRA) and $113 million in civil works on airport property provided by the SFIA. FTA’s commitment of $750.0 million to the project remains unchanged. Ridership is projected to be 68,600 trips per day by 2010, including approximately 17,800 daily trips by air travelers and airport employees.


An Alternatives Analysis/Draft Environmental Impact Statement (DEIS)/Draft Environmental Impact Report (DEIR) was completed in 1992, resulting in a locally preferred alternative. New alignments were later evaluated and, in April 1995, BART and SamTrans revised the preferred alternative. Due to MTC and Congressional direction to evaluate lower cost options, an aerial design option into the Airport was evaluated in a Focused Re-circulated DEIR/Supplemental #2 DEIS. The Final EIS was completed in June 1996 and a Record of Decision (ROD) was issued in August 1996.

On June 30, 1997, FTA entered into a Full Funding Grant Agreement (FFGA) for the BART/SFO Extension for $750 million in Federal section 5309 new start funds. TEA-21 section 3030(a)(79) authorized the BART to SFO project for final design and construction.

Through FY 2000, $217.2 million has been appropriated to the BART-SFO Extension.

The BART-SFO project is participating in the FTA Turnkey Demonstration Program, initiated under ISTEA to determine if the turnkey (design/build) approach will reduce implementation time and cost. The first BART-SFO contract for Site Preparation and Utility Relocation was awarded on July 24, 1997. The main contract for construction of the Line, Trackwork, and Systems, the first of the four design-build contracts, was given notice-to proceed on May 4, 1998. The remaining three design-build contracts, for the construction of the South San Francisco, San Bruno and Millbrae stations have also been awarded. The Revenue Operation Date for the BART-SFO extension is now July 1, 2002.

The San Francisco International Airport (SFIA) is a major partner in this extension project although the airport work is outside the scope of the FFGA. The activities to be designed and constructed on the airport property consist mainly of construction of structures and facilities and the installation of related equipment. These activities are being funded, designed, and constructed by SFIA for BART.

(Reported in $YOE)


Proposed Source of Funds

Total Funding ($million)


Appropriations to Date

  §5309 New Starts


($217.2 million appropriated through FY 2000)
  San Francisco International Airport










Available CAPRA



Total Project with CAPRA


NOTE: Totals may not add due to rounding.

BART to Airport Extension (map)