Route
Junction number
None
Markerpost
70.7 km
Name
Thickthorn Interchange
Terminus
Not a terminus
Other routes
A47, B1172
Authority
Restricted turns
Full access
Services
Service area here
Service area name
Thickthorn
Services operator
Shell
A11 Thickthorn Interchange
Layout and signage
Hethersett B1172 ThickthornSwaffham A47 Great Yarmouth A47 Ipswich (A140) Lowestoft (A146) |
A47 B1172 |
|
A47 (A140) (A146) |
Great Yarmouth A47 Ipswich (A140) Lowestoft (A146) Hethersett B1172 ThickthornSwaffham A47 |
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
Traffic signals
40mph speed limit begins
- Traffic signals
National Speed Limit begins
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...
Hogarth Flyover
It makes the traffic situation in one part of West London much more bearable but it should have been removed more than quarter of a century ago. It's amazing what you can do with a big Meccano kit.
About this page
Published
Last updated
Published
Last updated
