This article is about the former B907 at Causewayhead, Stirling.
For the later B907 just to the east, see B907 (Logie - Powis)
.For the current B907 in Queensferry, see B907
The southern end of the former B907 at Causewayhead
Back in 1922, when the A91 still met the A9 just to the west of Causewayhead in Stirling, the B907 climbed the steep hill to meet it near the Wallace Monument. This quickly became a spur of the A91, later becoming the mainline and the original section of A91 became the spur. Then when the A91 was moved further east it became the A997, and finally today (following a short period when it was unclassified) it is the B998.