As part of reconstruction of the station area and for the future electrification of the western and northern rail lines a new Power Signal Box was built at Strathfield. This (the third signal box) was located on the Down side parallel to the Down Local at the country end of the station. It was built on a resumed, triangular block of land bounded by the Main Western Line to its north and Clarendon Street (Albert Road) to its south. The power signal box was the third signal box erected at Strathfield, the previous two signal boxes becoming "mechanical signal boxes". Strathfield power signal box controlled all train movements from the Sydney side of Wentworth Road overbridge (east), through Strathfield platforms and the tracks to the north and west of the flyover at the country end.