A465 Hirwaun Interchange

Layout and signage

Hirwaun
Aberdâr — Aberdare
A4059
Treherbert
A4061
  A4059

A4059
    A4061   Hirwaun
Aberdâr — Aberdare
A4059
Treherbert
A4061

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 road that made no sense

It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.

The forever bottleneck, part 2

The second part of the story, where we learn why exactly the M4 gets narrower on the final approach to Europe’s biggest city.

The forever bottleneck, part 1

The M4 into London was one of the UK's earliest and most ambitious motorway projects. It was bold, pioneering... and almost instantly regretted.

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Have you seen...

M6 Hanchurch-Lymm

One of the longest lengths of motorway to open in one go, this book celebrates the opening of the M6 from the Potteries to the North West.

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