Route
Junction number
25
Markerpost
222.3 km
Name
Caerleon Interchange
Terminus
Not a terminus
Other routes
B4596
Authority
Restricted turns
Some turns restricted
Services
No services
M4 J25 Caerleon Interchange
Layout and signage
| B4596 | 
|
B4596 |
Caerleon B4596 |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
What's new
The sunlit uplands
On Saturday 31 May something historic happened. The Heads of the Valleys Road was finally complete.
Grand openings
Our much-loved Opening Booklets section has two new publications for you to explore, and we’re making some overdue changes to make them easier to find and easier to read.
Silver bullet
The Silvertown Tunnel is finally open for business. One question remains: what’s it for?
Have you seen...
Junction Three
The M621 has one junction where everything leaves the motorway and heads for the city, and a very bizarre junction it is too.
About this page
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