The M58 is a motorway passing through Merseyside and Lancashire, terminating in Greater Manchester. It is 12 miles (19.3 km) long and provides a link between the M6 motorway and the Metropolitan Borough of Sefton and hence on, via the A5036, to the Mersey docks in Liverpool and Birkenhead.

Merseyside is a ceremonial and metropolitan county in North West England. It borders Lancashire to the north, Greater Manchester to the east, Cheshire to the south, the Welsh county of Flintshire across the Dee Estuary to the southwest, and the Irish Sea to the west. The largest settlement is the city of Liverpool.