M4 J29 Castleton Interchange

Layout and signage

      A48(M)   Caerdydd (Dn a D)
Cardiff (E & S)
A48(M) Link

Lane configuration

LanesLanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.

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The long way round

When a road is closed, why isn't the diversion route just the quickest way past the closure?

Signs and sensibility

The one great attempt to make London’s streets logical - and how one retired chauffeur’s favourite routes changed the way you get around the capital.

A bridge under troubled bridges

A bridge that was ruined by another bridge, and a type of highway planning beyond any of the UK’s worst nightmares.

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M6 Preston Bypass

The "Preston By-Pass" was Britain's first motorway, opened in 1958. These books show the road as it was on opening day and share some of the thrill of this pioneering project.

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