M18 motorway (Great Britain) and 12 June 2015. The M18 was originally to be part of the M1, but it was decided to route the M1 towards Leeds instead of Doncaster, and the routing of what would have been the M1 east of Sheffield became the M18. Data from driver location signs are used to provide distance and carriageway identifier information. The location sequence is a continuation of the M1 location sequence. !scope=col|miles !scope=col|km !scope=col abbr="Southbound"|Southbound exits (B carriageway) !scope=col|Junction !scope=col abbr="Northbound"|Northbound exits (A carriageway) !scope=col|Coordinates M18 motorway (Great Britain) The M18 is a motorway in Yorkshire, England. It runs from the east of
M62 motorway the Islington Radial. Difficulties arose building the Liverpool urban motorway resulting in delays, with the section between Tarbock and Liverpool the last to be completed in 1976. In total, two viaducts, ten bridges and seven underpasses were constructed to secure the structural integrity of the surrounding residential areas. The motorway was constructed only as far as the Queens Drive inner ring road, which is junction 4. The section west of Manchester was intended to be a separate motorway, the M52 to link Liverpool and Salford, but a continuous motorway between Leeds and Liverpool was deemed more feasible, Construction between Liverpool