The M73 distributes traffic between three of Glasgow’s most important approaches, and provides a key link in the north-south drive through Scotland’s central belt, but its main purpose is to help people avoid Glasgow.
The wait is over! The full map of the Ringways, London’s unbuilt urban motorway network, is now online. Not even the system's planners had anything like this.
Those last few miles of the M1 east of Leeds were completed in 1999. It looks for the most part like a fairly average piece of road, but one of the project's engineers describes some of the challenges that were faced.