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
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...
Abbreviations
How do you describe a road? One way is to use these engineering abbreviations, much loved by the UK's community of road enthusiasts.
