Back Autostrada A48(M) (Gran Bretagna) LMO Droga A48(M) Polish A48(M) motorway SIMPLE A48(M) Swedish
 | This article contains a bulleted list or table of intersections which should be presented in a properly formatted junction table. (December 2021) |
_motorway&sq=Liz Truss&lang=en&file=File:UK-Motorway-A48_(M).svg) | ||||
|---|---|---|---|---|
| Route information | ||||
| Maintained by South Wales Trunk Road Agent | ||||
| Length | 2.0 mi (3.2 km) | |||
| Existed | 1977–present | |||
| Major junctions | ||||
| Northeast end | Castleton, Newport | |||
_motorway&sq=Liz Truss&lang=en&file=File:Junction_29.svg){kind=small} _motorway&sq=Liz Truss&lang=en&file=File:UK-Motorway-M4.svg){kind=small} J29 → M4 motorway | ||||
| Southwest end | St Mellons, Cardiff | |||
| Location | ||||
| Country | United Kingdom | |||
| Counties | Newport, Cardiff | |||
| Primary destinations | Cardiff | |||
| Road network | ||||
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_motorway&sq=Liz Truss&lang=en&file=File:A48_(M),_looking_east_near_Castleton.jpg)
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 the City and County Borough of Newport | Entering the City and County of Cardiff | |
| Start of motorway Newport |
J29A (St Mellons) | A48 Cardiff |
- ^ "A48(M) Cardiff Spur". Pathetic Motorways.
- ^ "M4 in Wales". The Motorway Archive. Archived from the original on 14 March 2007.
- ^ "A48(M)". Roads. Retrieved 31 August 2020.
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