The station has two high-level side platforms, each 10 cars long, serving the outer tracks of the four-track Northeast Corridor.

Unfortunately, it was little more than a flag stop until NY&NE built a station in 1870, before the line was acquired by the New York, New Haven and Hartford Railroad in 1872.

This reconstruction project was taking place despite Penn Central's continuous financial despair throughout the 1970s, which forced them to turn over their commuter service to the Metropolitan Transportation Authority.

On September 25, 2013, a main feeder cable that provides electricity to an 8-mile (13 km) long segment of the New Haven Line failed, causing electric train service over the line to halt.

Consolidated Edison and Metro-North installed a temporary substation at Harrison on September 28 in an effort to help alleviate the outage for Monday's regular services.