The A48(M)

motorway A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway and expressway. Other similar terms i ...

in Wales links

Cardiff Cardiff (; cy, Caerdydd ) is the capital and largest city of Wales. It forms a principal area, officially known as the City and County of Cardiff ( cy, Dinas a Sir Caerdydd, links=no), and the city is the eleventh-largest in the United Kingd ...

with Newport. It is a long M4

spur A spur is a metal tool designed to be worn in pairs on the heels of riding boots for the purpose of directing a horse or other animal to move forward or laterally while riding. It is usually used to refine the riding aids (commands) and to ba ...

. At St Mellons, it runs continuously into the dual-carriageway A48, which also features (albeit narrow) hard shoulders. The A48(M) has no junctions and opened in 1977.Pathetic Motorways – A48(M)
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The M4 was extended from junction 29 in 1980.

Previous A48(M) motorways

The

Port Talbot Port Talbot (, ) is a town and community in the county borough of Neath Port Talbot, Wales, situated on the east side of Swansea Bay, approximately from Swansea. The Port Talbot Steelworks covers a large area of land which dominates the south ...

bypass which opened in 1966, was numbered A48(M) before its incorporation into the westward extension of the M4 in the 1970s. Some maps show the

Morriston Morriston (; cy, Treforys ) is a community in the City and County of Swansea, Wales and falls within the Morriston ward. It is the largest community in Swansea county. Morriston is sometimes referred to as a distinct town (e.g. the local fo ...

bypass section of the M4 as also having been originally numbered A48(M), although whether this number was ever used on the ground has been questioned.Pathetic Motorways – A48(M) Morriston Bypass
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References

External links

*
CBRD Motorway Database – A48(M)

Pathetic Motorways – A48(M)
{{DEFAULTSORT:4-0048 Motorways in Wales Transport in Newport, Wales Transport in Cardiff