M6 J4A Water Orton Interchange

Layout and signage

      (M42)   The NORTH
(M1 Link)
M40 Link)
M42 Link

Lane configuration


  • Lane 1 exits and does not return (part time using the hard shoulder).
  • Lane 2 exits and does not return.
  • Lane 3 splits to create a new lane.
  • Lane 4 continues ahead.

Other events

  • Signs Variable Speed Limits apply

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We’ve spent years documenting the unbuilt urban motorway network planned for London. Today we’re unveiling more new routes that have never been seen before!

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The story of an incredible plan to reshape London into a city of motorways, with the history from creation to cancellation and details on every unbuilt road.

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