M4 J23A Magor Interchange

Layout and signage

Caldicot
Magwyr
Magor
A4810
Services Magor
      A4810   Magwyr
Magor
Caldicot
A4810
Services Magor

Lane configuration

LanesLanesLanesLanesLanes

  • Lane 1 exits and returns after the junction.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.

LanesLanesLanesLanesLanes

  • Lane 1 exits and returns after the junction.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.

In this section

What's new

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.

All change

In July 2024, a new Government entered office with a very different set of priorities. What does it mean for a faltering roads programme?

Share this page

Have you seen...

Croydon Ring Road

Common sense suggests that you shouldn't be able to spend so much money on heavy engineering and end up with such a terrible road system.

About this page

Published

Last updated