Route
Junction number
12
Markerpost
46 km
Name
Portsbridge Interchange
Type
Non-standard interchange
Terminus
Terminus at end of exit list
Other routes
M275, A3, A27
Authority
Restricted turns
Some turns restricted
Services
No services
M27 J12 Portsbridge Interchange
Layout and signage
|
Portsmouth Continental Ferry  M275 Link Cosham Hilsea A3 |
M275 A3 |
|
A27 A3 |
Lane configuration
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 1 continues ahead.
- Lane 2 continues ahead.
- Lane 3 is gained from the entry sliproad.
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...
M25 Orbital Motorway
The M25 is either one of the greatest transport achievements of the 20th century or one of Britain's largest planning failures, depending on which way you look at it. This booklet takes the former view, celebrating the completion of the circuit in 1986.
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