In 1878, it was opened to passenger traffic, replacing the earlier Machynlleth Town, and was adjacent to the standard gauge station of the same name.

These platforms were leased to the Aberllefenni and Ratgoed quarries who abandoned their river wharfs in favour of transshipping their slate to the N&MR.

The other slate quarries that used the Corris leased additional platforms over the next two decades and the river wharves were no longer used by the end of the 1870s.

[2] In 1874 the Corris built a goods warehouse and stable block on land bought from the Cambrian Railways who had by then acquired the N&MR.

After swapping land with the Cambrian Railways, the original station was demolished in 1906 and replaced with a new much larger building which opened in 1907.