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
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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
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