Route
Junction number
None
Markerpost
Unknown
Name
St Mellons Interchange
Type
Terminus
Terminus at end of exit list
Other routes
A48
Authority
Restricted turns
Some turns restricted
Services
No services
A48(M) St Mellons Interchange
Layout and signage
|
Llaneirwg St Mellons A48 |
|
A48 |
Caerdydd Cardiff A48 |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 1 continues ahead.
- Lane 2 continues ahead.
Other events
Start of motorway regulations
End of motorway regulations
What's new
Grand openings
Our much-loved Opening Booklets section has two new publications for you to explore, and we’re making some overdue changes to make them easier to find and easier to read.
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...
Clear and legible
A century ago, one short memorandum issued by the Ministry of Transport laid the groundwork for a system of standardised, uniform road signs and a great deal more.
About this page
Published
Last updated
Published
Last updated
