M4 J32 Coryton Interchange

Layout and signage

Caerdydd (G)
Cardiff (N)
Merthyr Tudful
Merthyr Tydfil
A470
  A4054


A470



   

A470

A4054
  Caerdydd (G)
Cardiff (N)
Merthyr Tudful
Merthyr Tydfil
A470

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

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...

M1 under construction

Pictures taken as the first section of the M1 was being built in 1958-9, with all its unique architecture still under construction.

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