San Bruno is a Bay Area Rapid Transit station located adjacent to the Tanforan shopping center in suburban San Bruno, California, in northern San Mateo County. It consists of two main tracks and a shared underground island platform.Station layoutSan Bruno Station is designated by BART as an official, time-coordinated cross-platform transfer station for passengers traveling between Millbrae station to the south and San Francisco International Airport to the east.Service at the station began on June 22, 2003, as part of the BART San Mateo County Extension project that extended BART service southward from Colma to Millbrae and San Francisco International Airport (SFO).