Route
Junction number
None
Markerpost
32.2 km
Name
Monmouth Roundabout
Type
Roundabout
Terminus
Not a terminus
Other routes
A466
Authority
Restricted turns
Full access
Services
No services
A40 Monmouth Roundabout
Layout and signage
|
Trefynwy — Monmouth A466 |
A466 | 
|
Trefynwy — Monmouth A466 |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues, with option to exit.
- Lane 1 continues, with option to exit.
- Lane 2 continues, with option to exit.
Other events
National Speed Limit begins
50mph speed limit begins
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...
Roundabouts
The UK has been driving in circles for a hundred years now, and this humble road junction has become part of British culture. Just what is so special about roundabouts?
About this page
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Published
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