Route
Junction number
25A
Markerpost
Unknown
Name
Grove Park Interchange
Type
Terminus
Not a terminus
Other routes
A4042
Authority
Restricted turns
Some turns restricted
Services
No services
M4 J25A Grove Park Interchange
Layout and signage
 Usk
|
A4042 |
|
Casnewydd Newport Cwmbran A4042 Usk
|
Lane configuration
- Lane 1 is gained from the entry sliproad.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
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...
Liverpool Inner Motorway
There's almost no evidence of Liverpool's 1960's plans for an inner ring road on the ground - but the motorway that never materialised would have been astonishing. The full details on the route, and the missing part the M62, are here.
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