Route
Junction number
None
Markerpost
31.2 km
Name
Wye Bridge Junction
Type
Crossroads
Terminus
Not a terminus
Other routes
A466
Authority
Restricted turns
Some turns restricted
Services
No services
A40 Wye Bridge Junction
Layout and signage
|
Trefynwy — Monmouth A466 No Right Turn |
A466 | 
|
A466 (A4136) |
Cas-gwent — Chepstow Fforest y Ddena Forest of Dean A466 (A4136) No Right Turn |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
Other events
Traffic signals
- Traffic signals
What's new
The road that made no sense
It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.
The forever bottleneck, part 2
The second part of the story, where we learn why exactly the M4 gets narrower on the final approach to Europe’s biggest city.
The forever bottleneck, part 1
The M4 into London was one of the UK's earliest and most ambitious motorway projects. It was bold, pioneering... and almost instantly regretted.
Have you seen...
The Magic Roundabout
Officially the seventh most frightening thing on the road network - but actually it might just be the most efficient junction ever designed.
About this page
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Last updated
Published
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