Circle line (London Underground) with the other London Underground sub-surface lines: the Hammersmith & City line from Hammersmith to just before Aldgate; the Metropolitan line from Baker Street to Aldgate; and the District line from Tower Hill station to Edgware Road station. The line is electrified with a four-rail DC system: a central conductor rail is energised at and a rail outside the running rail at , giving a potential difference of . The running rails are not electrified. Much of the double track railway from the Hammersmith terminus to Westbourne Park station is on a high brick viaduct. East of Westbourne Park the
Upminster Bridge 248 and 370 bus routes, with services to Cranham, Romford, Upminster and Lakeside. The London Loop key walking route passes through the Upminster Bridge area, and the station forms the end point of section 22 from Harold Wood and the starting point of section 23 to Rainham. Until 1972, bus routes on the A124 road that crosses the narrow bridge were more numerous. Before 248 was extended from its orbital run around Upminster Park Estate to connect into Romford town centre, the London Transport buses reaching Upminster station were the 193 and the 86. The latter running all the way