Route
Junction number
18
Markerpost
169.5 km
Name
Tormarton Interchange
Terminus
Not a terminus
Other routes
A46
Authority
Restricted turns
Full access
Services
No services
M4 J18 Tormarton Interchange
Layout and signage
|
Bath Stroud A46 |
A46 | 
|
A46 |
Bath Stroud A46 |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- 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...
Almondsbury Interchange
The UK's first four-level interchange opened in 1966. Relive some of the wonder and excitement of this icon of the motorway era with the book published to mark its completion.
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