Route map:

A48(M) motorway

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A48(M) shield
A48(M)
Route information
Maintained by South Wales Trunk Road Agent
Length2.0 mi (3.2 km)
Existed1977–present
Major junctions
Northeast endCastleton, Newport
Major intersections
J29 → M4 motorway
Southwest endSt Mellons, Cardiff
Location
CountryUnited Kingdom
CountiesGwent, South Glamorgan
Primary
destinations
Cardiff
Road network
← A38(M)→ A57(M)
North-Eastbound heading towards M4 junction 29

The A48(M) motorway in Wales links Cardiff with Newport. It is a 2-mile (3.2 km) long M4 spur. At St Mellons, it runs continuously into the dual-carriageway A48, which also has (albeit narrow) hard shoulders. The A48(M) has no other junctions and opened in 1977.[1][2] The M4 was extended west from junction 29 in 1980.[3]


A48(M) motorway
North-Eastbound exits Junction South-Westbound exits
M4
London 		J29 M4 (Castleton) Start of motorway
Entering Gwent Entering South Glamorgan
Start of motorway
Newport 		J29A (St Mellons) A48 Cardiff

Previous A48(M) motorways

The 6-mile (9.7 km) Port Talbot bypass which opened in 1966,[2] was numbered A48(M) before its incorporation into the westward extension of the M4 in the 1970s.[4] Some maps show the Morriston 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.[5]

References

  1. ^ "A48(M) Cardiff Spur". Pathetic Motorways.
  2. ^ a b "M4 in Wales". The Motorway Archive. Archived from the original on 14 March 2007.
  3. ^ "A48(M)". Roads. Retrieved 31 August 2020.
  4. ^ "A48(M) Port Talbot Bypass". Pathetic Motorways.
  5. ^ "A48(M) Morriston Bypass". Pathetic Motorways.
KML file (edit • help)
Template:Attached KML/A48(M) motorway
KML is from Wikidata
Retrieved from "https://mdwiki.org/wiki/A48(M)_motorway"