A55 J9 Treborth Interchange

Layout and signage

  A487     A487   Bangor

Lane configuration


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


  • Lane 1 has option to exit and splits to create a new lane.

Other events

  • Signs 50mph speed limit begins
  • Signs National Speed Limit begins

In this section

What's new

Sorry, wrong number

Road numbering is a system with clear rules. What happens when the people responsible for numbering roads don't follow them?

We need to talk about Wisley

National Highways are spending a third of a billion pounds rebuilding one of the most congested junctions on the M25. Is it money well spent?

Oxford's Ground Zero

Oxford's Zero Emission Zone is just a trial, but transport policy in Oxford has become the catalyst for pitched battles and drawn in protestors from across the UK. What's happening to this genteel university town?

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Have you seen...

New Medway Viaducts

Taken over the course of two years, from 2002 to 2003, these sixteen images chart the construction of two new bridges alongside the M2 Medway Viaduct.

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