It is intended to serve as the interchange point to the Monon Corridor,[3] which is expected to open to revenue service in 2025.

Hammond Gateway station features three tracks — two for the original South Shore Line and one for the future Monon Corridor.

[2] Monon Corridor trains are planned to either continue to Millennium Station at peak service hours or terminate here as short turns at other times, with transfers available on the main line platform.

[10] In 2017, the NICTD began demolition of houses between Hanover and Brunswick streets to begin construction of a new right-of-way and station.

[11] The City of Hammond's financial contribution to the West Lake Corridor project was dependent on construction of the new interchange station.