A406 Henly's Corner (west)

Layout and signage

The NORTH
Watford
Mill Hill
Hendon
A1 Link (M1 Link)
      A1
(M1)
  The NORTH
Watford
Mill Hill
Hendon
A1 Link

Lane configuration

LanesLanesLanesLanesLanesLanes

  • Lane 1 continues ahead.
  • Lane 2 splits to create a new lane.
  • Lane 3 exits and does not return.
  • Lane 4 exits and does not return.

LanesLanesLanesLanesLanesLanes

  • Lane 1 is gained from the entry sliproad.
  • Lane 2 continues, with option to exit.
  • Lane 3 continues ahead.
  • Lane 4 continues ahead.

Other events

  • Signs Traffic signals
  • Signs Traffic signals

In this section

What's new

Silver bullet

The Silvertown Tunnel is finally open for business. One question remains: what’s it for?

Skid Risk, Accident, Fog

For the first time, we can share pictures of the pioneering experiment that lit up the Worcestershire countryside with enormous signs 61 years ago.

All change

In July 2024, a new Government entered office with a very different set of priorities. What does it mean for a faltering roads programme?

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Have you seen...

The Improbable A39

It crosses cattle grids and untamed moorland, it climbs 1-in-4 hills and plummets through hairpin bends, it runs single-track through woodland and historic villages. It's rugged and beautiful. Is it really the A39?

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