Route
Junction number
40
Markerpost
289.4 km
Name
Taibach Interchange
Terminus
Not a terminus
Other routes
A4107
Authority
Restricted turns
Full access
Services
No services
M4 J40 Taibach Interchange
Layout and signage
|
Port Talbot A4107 |
A4107 | 
|
A4107 |
Port Talbot A4107 |
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
National Speed Limit begins
50mph speed limit begins
What's new
A bridge under troubled bridges
A bridge that was ruined by another bridge, and a type of highway planning beyond any of the UK’s worst nightmares.
The monster seen from below
What might it have been like to stand in one spot and witness the arrival, and the uncertainty, of plans for an urban motorway in West London?
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.
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.
About this page
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Published
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