A12 (M25 J28) Brook Street Interchange

Layout and signage

N/A   M25







    A1023


M25










  Dartford Tnl (M20 Link)
Gatwick Airport (M23 Link)
Stansted Airport (M11 Link)
Watford & (M1 Link)
Heathrow Airport (M4 Link)
M25 Link
London
Romford
A12

Lane configuration

LanesLanesLanesLanesLanes

  • Lane 1 is gained from the entry sliproad.
  • Lane 2 terminates.
  • Lane 3 continues ahead.

LanesLanesLanesLanes

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

Share this page

Have you seen...

A1(M) Darlington Bypass

Opened in May 1965, the A1(M) Darlington Bypass was one of the UK's earliest motorways and made huge strides in linking the North East to the rest of England. Explore the pioneering spirit of its engineers in the book they produced to mark its opening.

About this page

Published

Last updated