Croesnewydd North Fork Signal Box stands at the at northern apex of a triangular junction where the Wrexham & Minera line (now closed) meets the Shrewsbury & Chester line. It was built to a Great Western Railway type 27c design in 1905. Of timber framed and weatherboarded construction, it is a two storey building under a hipped slate roof. According to Ordnance Survey 25in mapping of 1872, 1899 and 1912, it would appear that the current box replaced a smaller one on the same site and that, originally four bays, it was later extended by an extra bay to the south. The box currently houses an 83-lever frame of 1940; it is probable that the extra bay was added at the time to accommodate this.
Sources include: Peter Kay, Signalling Atlas and Signal Box Directory (Third Edition), Signalling Record Society, Wallasey, 2010; Network Rail, Signal Box Register (undated). For further information on the types and designs of signal boxes see: The Signalling Study Group, The Signal Box - A Pictorial History and Guide to Designs, OPC, 1986.

B.A.Malaws, RCAHMW, 25 March 2015.