A470 Nantgarw Interchange

Layout and signage

Yst Ddiw Trefforest
Treforest Ind Est
A4054
Caerffili — Caerphilly
A468
  (A4054)     A468   Caerffili — Caerphilly
A468
Ffynnon Taf — Taff's Well
A4054

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

The sunlit uplands

On Saturday 31 May something historic happened. The Heads of the Valleys Road was finally complete.

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?

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Have you seen...

Above the M8

Go to Glasgow and it's almost inevitable that you'll use the M8. The views of the city surrounding it are really quite unique.

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