M2 (NI) J2 Greencastle Interchange

Layout and signage

Carrickfergus
Whiteabbey
M5 Link
Whitewell
Rathcoole
A2
  A2



    A2


M5
  Greencastle
Carrickfergus
A2

Lane configuration

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  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.
  • Lane 4 exits and does not return.
  • Lane 5 exits and does not return.

LanesLanesLanesLanesLanesLanesLanes

  • Lane 1 continues ahead.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.
  • Lane 4 is gained from the entry sliproad.
  • Lane 5 is gained from the entry sliproad.

In this section

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The monster seen from below

What might it have been like to stand in one spot and witness the arrival, and the uncertainty, of plans for an urban motorway in West London?

The road that made no sense

It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.

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.

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