Millbrae station has five tracks and three platforms at ground level, with a fare concourse on a mezzanine level above.
The Caltrain tracks are on the west side of the station.
The westernmost (southbound) track has a side platform; the northbound track uses half of an island platform shared with BART.
South of the Millbrae Avenue bridge, the northbound track splits in two to form a triple-track section to allow passing trains.
The northbound platform extends past the BART area as a side platform, and curves to serve the diverging track.

BART has three tracks; the western track serves the east side of the northbound Caltrain platform (with faregates between the two systems), allowing a cross-platform connection between northbound service.
The other two tracks serve an island platform.
Because ridership at Millbrae is lower than expected, only the western track is used in regular service; the other two tracks are used for train storage.

A 2,200-space parking garage (with direct access to the mezzanine), busway, and surface parking lots are located on the east side of the station.
A smaller busway and parking lot for Caltrain are on the west side.

The BART platform at Millbrae has six sculptures partially embedded in concrete blocks, with each figure representing a different era in community history.
Forty-two terrazzo benches installed at the station show scenes of local nature and history.
Millbrae station has five tracks and three platforms at ground level, with a fare concourse on a mezzanine level above. The Caltrain tracks are on the west side of the station. The westernmost (southbound) track has a side platform; the northbound track uses half of an island platform shared with BART. South of the Millbrae Avenue bridge, the northbound track splits in two to form a triple-track section to allow passing trains. The northbound platform extends past the BART area as a side platform, and curves to serve the diverging track.
BART has three tracks; the western track serves the east side of the northbound Caltrain platform (with faregates between the two systems), allowing a cross-platform connection between northbound service. The other two tracks serve an island platform. Because ridership at Millbrae is lower than expected, only the western track is used in regular service; the other two tracks are used for train storage.
A 2,200-space parking garage (with direct access to the mezzanine), busway, and surface parking lots are located on the east side of the station. A smaller busway and parking lot for Caltrain are on the west side.
The BART platform at Millbrae has six sculptures partially embedded in concrete blocks, with each figure representing a different era in community history. Forty-two terrazzo benches installed at the station show scenes of local nature and history.
Millbrae station