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M48 motorway
 | ||||
|---|---|---|---|---|
 M48 highlighted in blue | ||||
_full_view_-_geograph.org.uk_-_1742850.jpg) The Severn Bridge (M48) | ||||
| Route information | ||||
| Maintained by National Highways (England) and the South Wales Trunk Road Agent | ||||
| Length | 13 mi (21 km) | |||
| Existed | 1966–present | |||
| Major junctions | ||||
| East end | Awkley | |||
  J21 → M4 motorway  J23 → M4 motorway | ||||
| West end | Undy | |||
| Location | ||||
| Country | United Kingdom | |||
| Primary destinations | Chepstow | |||
| Road network | ||||
| ||||
The M48 is a 13-mile-long (21 km) motorway in Great Britain, which crosses the Severn near Chepstow, Monmouthshire, linking England with Wales via the Severn Bridge. This road used to be the M4, and as a result is anomalously numbered: as it lies to the north of the M4 and to the west of the M5, it is in the Motorway Zone 5.[citation needed] The M4, M48 and the A48(M) motorway are the only motorways in Wales.[1]
- ^ "Roads in Wales". Traffig Cymru/Traffic Wales. Retrieved 10 September 2023.
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