Chronology Maps
Click a section name to see full details and a map.
| Completed | Route | Name | Start | End | Original number | Downgraded |
|---|---|---|---|---|---|---|
| M4 | Chiswick Flyover | J1 Chiswick | Great West Road | A4 | ||
| M1 | London-Yorkshire Motorway | J5 Berrygrove | J18 Crick | |||
| M45 | Dunchurch Spur | M1 J17 Kilsby | J1 Dunchurch | |||
| A414 | St Albans Bypass | J1 Park Street | M1 J7 Breakspears | M10 |
What's new
Schrödinger’s speed limit
In 2022, Manchester City Council say they reduced the speed limit on the Mancunian Way to 30mph. But it’s not clear if they did. It’s not even clear if they can.
Sorry, wrong number
Road numbering is a system with clear rules. What happens when the people responsible for numbering roads don't follow them?
We need to talk about Wisley
National Highways are spending a third of a billion pounds rebuilding one of the most congested junctions on the M25. Is it money well spent?
Have you seen...
M1 Architecture
The most unique motorway in Britain owes its identity to its fifties architecture. Much of it is in danger of being removed or irreperably altered. This page documents it in detail.
