 The viaduct was designed by John Whitton, Chief Engineer of Railways, and built by George McGarvie Donald with convict labour.Crossing Marrangaroo Creek, at the time known as Middle River, Whitton used stone arch construction almost exclusively between and Wallerawang, despite a government decree to use local timber for bridge construction.This was possible due to the availability of local sandstone, which made the introduction of stone viaducts an economical option.