A48(M) motorway
A48(M) | ||||
|---|---|---|---|---|
A48(M) highlighted in blue | ||||
| 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 | |||
| J29 → M4 motorway | ||||
| Southwest end | St Mellons, Cardiff | |||
| Location | ||||
| Country | United Kingdom | |||
| Counties | Newport, Cardiff | |||
| Primary destinations | Cardiff | |||
| Road network | ||||
| ||||
The A48(M) motorway in Wales links Cardiff with Newport. It is a 2-mile-long (3 km) spur of the M4 motorway. 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] The M4 was extended west from junction 29 in 1980.[2]
Junctions
| 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 |
Previous A48(M) motorways
The 6-mile (9.7 km) Port Talbot bypass which opened in 1966,[1] was numbered A48(M) before its incorporation into the westward extension of the M4 in the 1970s. 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.
References
- ^ a b "M4 in Wales". The Motorway Archive. Archived from the original on 14 March 2007.
- ^ "A48(M)". Roads. Retrieved 31 August 2020.
Template:Attached KML/A48(M) motorway
KML is from Wikidata