Route
Junction number
M5 J29
Markerpost
Unknown
Name
Sowton Interchange
Type
Non-standard interchange
Terminus
Last before break point
Other routes
M5, A3015
Authority
Restricted turns
Full access
Services
No services
A30 (M5 J29) Sowton Interchange
Layout and signage
Lane configuration
- Lane 1 continues ahead.
- Lane 2 continues ahead.
- Lane 1 continues, with option to exit.
- Lane 2 exits and does not return.
Other events
End of motorway regulations
Traffic signals
- Traffic signals
Start of motorway regulations
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...
M4 Chiswick-Langley
An early triumph of the motorway programme, the M4 between Chiswick and Langley linked Central London to Heathrow - then still known as London Airport - and was the start of a new motorway west.
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