A421 Cardington Cross Interchange

Layout and signage

Sandy
Bedford
A603
  A603
(A600)
    A603   Bedford
Sandy
A603
Hitchin
Shefford
(A600)

Lane configuration

LanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.

LanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.

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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Have you seen...

Junction Three

The M621 has one junction where everything leaves the motorway and heads for the city, and a very bizarre junction it is too.

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