In 1954, a traction maintenance depot was built alongside the Fallowfield line at Reddish to service the new Class EM1 and EM2 electric locomotives and the Class 506 units on the newly electrified Woodhead Line. After the Woodhead line closed in 1981, the Reddish Depot activity was reduced to servicing trains on the Glossop Line until it was closed in May 1983. Servicing of the Class 506 units was then transferred to Longsight depot, until the Glossop line was converted to 25 kV AC in December 1984. Following closure, Reddish Depot was demolished. The site remained derelict until the late 2000s when the site was redeveloped for housing.