|Location Map ( geo)|
|St Julians, Newport|
|Modified Roundabout Interchange|
|M4, A4042, B4596|
|Junctions related to the A4042|
Caerleon Interchange is junction 25 of the M4 motorway.
The interchange is often referred to as "Caerleon Road", being situated on the road of that name, some 2.5 route kilometres from Caerleon itself.
Since the Brynglas Tunnels and Malpas Road Relief scheme, it has been a limited-access junction providing direct access to the motorway's eastbound carriageway only and exit from its westbound carriageway only. Previously it was full-access.
|Cardiff / Caerdydd (M4 (W)), Newport / Casnewydd, Cwmbran||via 550-m long western branch of B4596 (not signed as such)|
|Caerleon, University Caerleon Campus 2½||formerly A449|
|St. Julians||formerly A449|
- Cynulliad Cenedlaethol Cymru: Offeryn Statudol (National Assembly for Wales: Statutory Instrument) 24.11.05