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 bypass, which was built between 1957 and 1960. Adjusted for inflation to 2007, its construction cost approximately £765 million. The motorway has an average daily traffic flow of 144,000 vehicles in West Yorkshire, and has several areas prone to gridlock, in particular, between Leeds and Huddersfield and the M60 section around Eccles. The M62 coach bombing of 1974 and the Great Heck rail crash of 2001 are the largest incidents to have occurred on the M62. Stott Hall Farm, situated between the carriageways on the Pennine section has become one of the best-known sights on the motorway. The M62 has