Route
Junction number
None
Markerpost
Unknown
Name
Pencraig Speed Limit Change
Type
Speed limit change
Terminus
Not a terminus
Other routes
None
Authority
Restricted turns
Full access
Services
No services
A40 Pencraig Speed Limit Change
Layout and signage
Other events
National Speed Limit begins
50mph speed limit begins
What's new
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?
The road that made no sense
It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.
Have you seen...
Harry Yeadon
A civil engineer, working principally in the North West of England, responsible for many of the area's motorways.
About this page
Published
Last updated
Published
Last updated
