Route
Junction number
9
Markerpost
Unknown
Name
Treborth Interchange
Type
Non-standard interchange
Terminus
Not a terminus
Other routes
A487
Authority
Restricted turns
Full access
Services
No services
A55 J9 Treborth Interchange
Layout and signage
|
Bangor Caernarfon A487 |
A487 | 
|
A487 |
Bangor Caernarfon A487 |
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
50mph speed limit begins
National Speed Limit begins
What's new
Farewell GLC lights
Why am I all nostalgic about some street lights being replaced?
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.
Have you seen...
Smart Motorways
Motorways used to be really simple. Now they have electronic signals, variable speed limits, emergency lay-bys, part-time hard shoulders... Just what is so smart about Smart Motorways?
About this page
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