Chronology Maps
Click a section name to see full details and a map.
| Completed | Route | Name | Start | End |
|---|---|---|---|---|
| M4 | Second Severn Crossing | J21 Awkley | J23 Rogiet | |
| M49 | Avonmouth - Second Severn Crossing | M5 J18 Lawrence Weston | M4 J22 Pilning | |
| M77 | Dumbreck - Malletsheugh | J1 Dumbreck | J5 Malletsheugh |
What's new
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.
The forever bottleneck, part 2
The second part of the story, where we learn why exactly the M4 gets narrower on the final approach to Europe’s biggest city.
The forever bottleneck, part 1
The M4 into London was one of the UK's earliest and most ambitious motorway projects. It was bold, pioneering... and almost instantly regretted.
Have you seen...
Mixed Signals
During the 1960s the UK developed some of the most sophisticated - and strange - electronic variable message signs anywhere in the world. How? And, just as importantly... why?
