The station had two platforms with a large stone building on one side and a wooden shelter on the other.

[1] Rhiwderin, like the other stations on this section of the line, was relatively successful in its early years, but as the road networks expanded after the 1940s, its profitability declined.

[2] As of 2017, the line is still in a functional condition, and sees occasional traffic from Machen Quarry,[3] but there is no longer a passenger station in the area.

Rhiwderin station is now a private residence, though much of its original character has been retained.

[4] The station signal box was acquired in 1967 by the Caerphilly Railway Society.