A421 (M1 J13) Ridgmont Interchange

Layout and signage

N/A   M1









    A507

M1











  Ampthill
Ridgmont A507
London
M1 Link
Husborne Crawley
Milton Keynes
A421
The NORTH
M1 Link
Cranfield

Lane configuration

LanesLanesLanesLanes

  • Lane 1 continues ahead.
  • Lane 2 continues ahead.

LanesLanesLanesLanes
LanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.
  • Then further along:
  • Lane 1 terminates.
  • Lane 2 terminates.

In this section

What's new

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?

Skid Risk, Accident, Fog

For the first time, we can share pictures of the pioneering experiment that lit up the Worcestershire countryside with enormous signs 61 years ago.

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Old Motorway Photos

A gallery of images sent in by visitors to the site of original photos of motorways — including some impressive views of the M4 and M11 under construction.

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