M3 J13 Leigh Road Interchange

Layout and signage

Eastleigh
Chandler's Ford
A335
 




A335
   




A335
  Eastleigh
A335
Southampton Vehicle Ferry
Bournemouth
M27 (W) Link

Lane configuration

LanesLanesLanesLanesLanesLanes

  • Lane 1 exits and does not return.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.
  • Lane 4 continues ahead.

LanesLanesLanesLanesLanes
LanesLanesLanesLanesLanesLanesLanesLanes

  • Lane 1 has option to exit and splits to create a new lane.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.
  • Then further along:
  • Lane 1 continues ahead.
  • Lane 2 continues ahead.
  • There is a barrier between lanes.
  • Lane 3 continues ahead.
  • Lane 4 continues ahead.

In this section

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.

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