|Location Map ( geo)|
|M9, A9, B824, B8033|
|Junctions related to the B824|
|Junctions related to the B8033|
Keir Roundabout is junction 11 of the M9, the motorway's northern terminus. Though several junctions on the M90 are further north, Keir has, since the completion of the M80 in 2011, been the northern tip of the main, connected British motorway network. From it one can travel by continuous motorway to the south of England; for example, 462 miles to the south end of the M5 near Exeter or 506 miles to the coast end of the M20 near Folkestone (via the M40).
The roundabout is a large junction, connecting 5 separate routes carrying 4 numbers, all at grade. The M9 approaches from the south and most traffic is continuing north onto the Dualled A9 to Perth and The Highlands. This suggests that a flyover connecting the two routes would be useful, but in fact the roundabout is free flowing for most of the time, the large size and width of the circulatory area helping with this. The single carriageway B824 approaches from the west, loosely following the line of the old military road to Crianlarich, although today it is just the back road into Doune. The line of the old A9 is now followed by the still dualled B8033 which heads north into Dunblane, a little to the east of the A9 Dunblane Bypass, and is the start of the old military road to Crieff and so Inverness. Finally the A9 route heading into Bridge of Allan and Stirling heads east, quickly turning south to run parallel to the motorway. This too is part of the old military road network.
Prior to the construction of the M9 and Dunblane Bypass, this junction was a simple give way T junction for the B824 onto the A9. Even when the A9 was dualled to the north it remained a T junction, and it was only with the opening of the M9 that the roundabout was installed. That part of the M9 opened on 6 April 1971.
|Glasgow (M80), Edinburgh, Stirling|
|Bridge of Allan|