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
M18 motorway (Ireland) (36 mi.) long. The project involved the construction of motorway from Gort to Athenry, extending in the process the total length of the M18 by . It connects to the M17 Motorway where they cross the Dublin to Galway M6 motorway, which opened in December 2009. This was also included in the second tranche of motorway redesignations and was opened as motorway. In April 2014, it was confirmed that the project would proceed and the new section opened on 27 September 2017. Work on the project began on 15 January 2015 and was managed by Direct Route. Initially, none of