Route
Junction number
None
Markerpost
51.8 km
Name
Marsh Mills Interchange
Terminus
Not a terminus
Other routes
A374, B3416
Authority
Restricted turns
Full access
Services
No services
A38 (Devon Expressway) Marsh Mills Interchange
Layout and signage
|
Plympton B3416 Plymstock A374 |
B3416 (B3417) |
|
A374 |
Plymouth (E & Cen) Car Ferry  Mutley Plymstock A374 |
Lane configuration
- Lane 1 is gained from the entry sliproad.
- Lane 2 continues, with option to exit.
- Lane 3 continues ahead.
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
What's new
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.
Hello, here's my ridiculous side project
An introduction to what I write, and why I write it, and where my strange new road sign simulator fits in to all this.
Have you seen...
M6 Preston Bypass
The "Preston By-Pass" was Britain's first motorway, opened in 1958. These books show the road as it was on opening day and share some of the thrill of this pioneering project.
About this page
Published
Last updated
Published
Last updated
