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 sunlit uplands
On Saturday 31 May something historic happened. The Heads of the Valleys Road was finally complete.
Grand openings
Our much-loved Opening Booklets section has two new publications for you to explore, and we’re making some overdue changes to make them easier to find and easier to read.
Silver bullet
The Silvertown Tunnel is finally open for business. One question remains: what’s it for?
Have you seen...
Major incidents
What happens when there's a big accident on a trunk route? Who picks up the pieces, and why does it take so long?
About this page
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