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A48 South Wales Trunk Road

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Map ReferenceSS97NW
Grid ReferenceSS9179078520
Unitary (Local) AuthorityBridgend
Old CountyGlamorgan
Type Of SiteROAD
The A48 is a major trunk road extending from a junction with the London to Fishguard A40 trunk road (nprn 419867) at Highnam in Gloucestershire to Carmarthen. Historically it was the most important route into and across south Wales and follows closely the original Roman trade route. The road originally crossed the Wales - England border at Chepstow Bridge (nprn 43154); now it crosses via a modern bridge at ST 53950 94100 and then passes through Newport, Cardiff, Cowbridge, Bridgend, Pyle, Port Talbot, Neath, Swansea and Carmarthen, where it re-joins the A40. The road is now largely superceded by the M4 Motorway (nprn 417517) as a main route across south Wales.
C.Parry & B.A.Malaws, RCAHMW, 18 January 2011.