M55 motorway meet junction 4, where the motorway ends and becomes the A5230. The western part of the M55, and the first few hundred metres of the A5230, occupy the route of the old Blackpool Branch railway line. The first motorway constructed in Great Britain was the M6 Preston Bypass, opened in 1958. This ran from the current M6 junction 29 to the M55 junction 1. It was built as a two-lane route. In 1965 the M6 was extended north from what is the current day junction 32 to meet the Lancaster Bypass, and the M6 junction was rebuilt to its current
M1 motorway directly to straights (or curves of a different radius) on later motorways. M1 motorway The M1 motorway connects London to Leeds, where it joins the A1(M) near Aberford, to connect to Newcastle. It was the first inter-urban motorway to be completed in the UK; the first road to be built to motorway standard in the country was the Preston By-pass, which later became part of the M6. The motorway is long and was constructed in four phases. Most of the motorway was opened between 1959 and 1968 but the southern end was extended in 1977 and the northern end was