 It is the only motorway in Shropshire, and forms a vital part of the county's road network.The motorway handles an AADT of between 50,300 (J2-3) and 41,800 (J4-5) vehicles.The idea of the M54 was originally presented due to the high volumes of traffic on the A5, London to Holyhead road which was largely constructed by civil engineer Thomas Telford in the early 19th century following the route of the Roman Watling Street, which connected Rochester, Kent with Wroxeter, Shropshire.