Route
Junction number
9
Markerpost
35.5 km
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
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