The station has two high-level side platforms, each two cars long, serving the outer tracks of the four-track line.

However, because of the railroad's serious financial distress following the merger, commuter service was turned over to the Metropolitan Transportation Authority in 1972.

[7]: 31  On September 10, 1974, the MTA announced that work would start on the construction of high-level platforms at eleven stations in Manhattan and the Bronx including at Tremont.

However, initially they only served the station during weekends and early mornings and evenings on weekdays until the platform work was completed.

[9] Penn Central was acquired by Conrail in 1976, and the line and station were completely turned over to Metro-North Railroad in 1983.