M27 J4 Chilworth Interchange (West)

Layout and signage

      M3   Winchester
Eastleigh
London
M3 Link

Lane configuration

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  • Lane 1 is gained from the entry sliproad.
  • Lane 2 is gained from the entry sliproad.
  • Lane 3 continues ahead.
  • Lane 4 continues ahead.

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  • Lane 1 exits and does not return.
  • Lane 2 exits and does not return.
  • Lane 3 continues ahead.
  • Lane 4 continues ahead.

In this section

What's new

Grand openings

Our much-loved Opening Booklets section has two new publications for you to explore, and we’re making some overdue changes to make them easier to find and easier to read.

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.

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Pedestrian Crossings

From Zebra to Pelican and beyond: the comprehensive history of the development of the humble pedestrian crossing.

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