The M9 is a motorway in Scotland, running from the M8 west of Edinburgh to the A9 north of Stirling. It is the quietest single digit motorway in Great Britain. It shares part of its route with the M876, one of only three multiplexes between two motorways in Great Britain.
The Humbie Roundabout was a junction which linked the A8000 and B800 to the M9 Spur. It was demolished in late 2006 when the M9 Spur was extended further towards the Forth Road Bridge, the extended spur opening in September 2007.
Timelapse video showing the demolition of the 4-span Chartershall Bridge.
The old M9 Chartershall Bridge had been struck by overheight vehicles on numerous occasions and was beyond repair. The unclassified road running over the bridge was closed to road traffic on safety grounds.
The new bridge will provide greater headroom clearance over the M9 motorway, and will allow the reopening of the unclassified road.