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 1974. On the first contract, care was needed at the River Calder crossing due to the alluvial bedrock. On the second contract precautions were taken as the length was built on old coal mine workings. The section between Ferrybridge and North Cave was the last to be planned and built. The Ouse Bridge, across the River Ouse west of Goole, commenced in January 1973 and is nearly long and rises to above ground level. Completion of the bridge was delayed due to "steel supplies [being] a chronic headache" and a partial collapse of the framework caused by bolts joining a