12th Street Oakland City Center station

12th Street Oakland City Center is an underground Bay Area Rapid Transit station located at the intersection of 12th Street and Broadway at the Oakland City Center in Downtown Oakland north of the Oakland Wye. It is the busiest BART station in both Oakland and the East Bay, with a monthly ridership of approximately 14,000 as of November 2016, and is the 5th busiest BART station overall.The concourse mezzanine is on the first level downstairs, an island platform and two main tracks for Northbound trains (bound for Richmond and Pittsburg/Bay Point) are on the second level downstairs, and a side platform with one track for Southbound trains (bound for Warm Springs/South Fremont, Millbrae, and San Francisco International Airport) are on the third level downstairs.