Route
Junction number
M4 J24
Markerpost
0.0 km
Name
Coldra Interchange
Terminus
Terminus at end of exit list
Other routes
M4, A48, B4237
Authority
Restricted turns
Full access
Services
No services
A449 (M4 J24) Coldra Interchange
Layout and signage
Lane configuration
- Lane 1 continues ahead.
- Lane 2 continues ahead.
- Lane 1 continues, with option to exit.
- Lane 2 exits and does not return.
Other events
National Speed Limit begins
40mph speed limit begins
Traffic signals
What's new
Signs and sensibility
The one great attempt to make London’s streets logical - and how one retired chauffeur’s favourite routes changed the way you get around the capital.
A bridge under troubled bridges
A bridge that was ruined by another bridge, and a type of highway planning beyond any of the UK’s worst nightmares.
The monster seen from below
What might it have been like to stand in one spot and witness the arrival, and the uncertainty, of plans for an urban motorway in West London?
Have you seen...
West Cross Route
Desperately-needed but never built, this was one of the only London urban motorway plans that were ever progressed to the construction stage.
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