A1(M) J45 Grange Moor Interchange

Layout and signage

Wetherby
Boston Spa
Otley
A659
  A661

A659
    A659   Wetherby
Boston Spa
Otley
A659

Lane configuration

LanesLanesLanesLanesLanes

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

LanesLanesLanesLanesLanes

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

In this section

What's new

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.

Hello, here's my ridiculous side project

An introduction to what I write, and why I write it, and where my strange new road sign simulator fits in to all this.

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Have you seen...

Sir James Drake

County Surveyor and Bridgemaster for Lancashire in the 1950s and 60s, Drake was instrumental in the motorway revolution.

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