[4] The line between Newton Stewart and Wigtown had no intermediate stops at first however in May 1875 it was decided to locate platforms or halts at Causeway End and Mains of Penninghame.

Ordnance Survey maps do not clearly indicate the exact location however a map of 1882 gives the name 'Mains Cross Station' and a site to the north of the old kirk where the embankment crosses the Mains of Penninghame Road.

[7] No sidings were present however a level crossing is recorded here that may have replaced the road underpass.

[8] Causeway End and Mains of Penninghame had a very limited service with a train only on Fridays at 10.20 a.m. and 4.20 p.m., the Newton Stewart market day,[9] an arrangement that was not that unusual, for example Racks railway station in Dumfries and Galloway from 1848 to 1860 had a Wednesday only service.

A rail overbridge still stands on the old trackbed on the route to Newton Stewart and the line crossed the Mains of Penninghame Road on a high embankment.