Merriwa railway line

The Merriwa railway line in the Hunter Valley of northern New South Wales, Australia, branches from the Main North line at Muswellbrook and travels south west to Denman then generally north west through Sandy Hollow to Merriwa, a distance of approximately 80 kilometres (50 mi). The line opened to Denman on 26 April 1915, and to Merriwa on 29 October 1917. CPH railmotor operated passenger service ceased on 7 July 1973.

The first 38 kilometres was rebuilt to main line standards in the early 1980s as part of the construction of the Sandy Hollow - Gulgong railway line. The section north west of Sandy Hollow closed with the last grain train hauled by four 48 class locomotives running on 8 May 1987. The Merriwa line was severed at on 11 December 1996.

There are three mines, Bengalla and Mount Pleasant, just south west and west of Muswellbrook and Mangoola, half way to Denman with balloon loops of this line and a number of passing sidings have been built with the traffic to/from the three mines at Ulan.