The station lies on Guntakal–Vasco da Gama section HDN-7A[2] and also connects the Gadag–Hotgi railway line.

Amenities at Gadag railway station include escalators at PF-1 & PF2, elevators at PF-1 & PF2, coach positioning display, computerized reservation office, waiting room, retiring room, free Wi-Fi facility,[3] vegetarian and non-vegetarian refreshments, and book stall.

In 1881 the Bombay Eastern Deccan Railway was under construction with William Michell the Engineer-in-Charge.

This line immediately upon opening became the Bijapur branch of the Southern Mahratta Railway.

By 1890, this line extended from Londa eastwards via Guntakal to Bezwada, and northwards to Poona, turning the SMR from an assortment of branches to a real railway network.

[6] In August 2017, the Ministry of Railways sanctioned 56 km of rail line between Gadag Junction and Yalvigi.

[7] Karnataka State Government has to start Land Acquisition Process after Final Location Survey Completion.

A new crossing station at Kudgi with four lines for giving connectivity to NTPC was commissioned on 29.01.2017.