Route
Junction number
4
Markerpost
Unknown
Name
Maryville Interchange
Type
Terminus
Not a terminus
Other routes
M73, A721
Authority
Restricted turns
Some turns restricted
Services
No services
M74 J4 Maryville Interchange
Layout and signage
Lane configuration
- Lane 1 exits and does not return.
- Lane 2 exits and returns after the junction.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
- Lane 1 is gained from the entry sliproad.
- Lane 2 exits and returns after the junction.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
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...
British Roads FAQ
The most Frequently Asked Questions where British Roads are concerned, and the answers. A good place to start if you're new to the subject or you're looking for quick facts.
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