A38 (Devon Expressway) Marsh Mills Interchange

Layout and signage

Plympton
B3416
Plymstock
A374
 


B3416
(B3417)
   


A374
  Plymouth (E & Cen)
Car Ferry Vehicle Ferry
Mutley
Plymstock
A374

Lane configuration

LanesLanesLanesLanesLanes

  • Lane 1 is gained from the entry sliproad.
  • Lane 2 continues, with option to exit.
  • Lane 3 continues ahead.

LanesLanesLanesLanesLanes

  • Lane 1 exits and does not return.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.

In this section

What's new

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.

London, in a new light

It was specially designed never to be noticed. And now it's disappearing, nobody has noticed its absence. It's London's own bespoke street light.

The Ringways Map is here

The wait is over! The full map of the Ringways, London’s unbuilt urban motorway network, is now online. Not even the system's planners had anything like this.

Share this page

Have you seen...

Reigate Tunnel

An unassuming Surrey market town with an amazing claim to fame — the world's first road tunnel.

About this page

Published

Last updated