The South Lancashire Tramways Company was authorised by the act to build over 62 miles (100 km) of track to serve the towns between St Helens (now in Merseyside), Swinton, Westhoughton and Hulton Lane where the Bolton Corporation system ended.
The system was the largest standard-gauge electric tramway outside London.
Construction began in late 1901 and in October 1902 the first section from Lowton through Leigh and Atherton to Four Lane Ends at Over Hulton opened.
[3] Atherton became the centre of the system and the tram sheds, power station and offices were built on the north side of Leigh Road at Howe Bridge (grid reference SD 6624 0203).
[4] Unrestored tram body, No 65 built by Brush Electrical Engineering Company in 1906, is in the collection of the Museum of Transport, Greater Manchester.