|To:||Cumbernauld Village (NS769766)|
|Distance:||8 miles (12.9 km)|
|Meets:||A803, B8080, A803, M80, M80, A8011|
|Route outline (key)|
The B816 is a semi-rural B-road in Scotland's Central Belt.
It starts at a mini-roundabout on the A803 (former A9) to the west of Falkirk town centre. The road heads south, running adjacent to the Forth & Clyde Canal. The two routes climb together - the canal via locks, the road with a gentle gradient - meeting the B8080 at a mini-roundabout shortly before road and canal separate. A short distance further on the road TOTSOs right.
The road continues west, skirting the suburb of Tamfourhill before zigzagging across the Glasgow to Falkirk railway line at a narrow bridge controlled by traffic lights. The road then continues through the woods and across the fields to High Bonnybridge where it TOTSOs right. The 1932 Ten-Mile Map shows the past mile or so running much further south, although there are no roads still in existence that it could have followed.
The railway line is crossed again although this time the road goes underneath. This bridge is also narrow - but a give-way sign is deemed sufficient. The Cumbernauld to Falkirk line is soon crossed and again traffic has to give way. The road then reaches Bonnybridge, where it crosses a drawbridge over the Forth & Clyde Canal before bending to the right to reach a roundabout on the A803.
The mainline of the B816 actually turned off just before the canal bridge. The road continues west, once again alongside the canal, as far as the next lock. The routes then diverge and the road reaches the M80 at J6A, unusual amongst motorway junctions for having bus gates. The road then goes under a railway viaduct (no giving way this time) before running through Castlecary parallel to the motorway. It ends shortly afterwards at the next motorway junction, J6, where all movements are allowed. The road ahead is the A8011.
When first classified in 1922, the B816 was much shorter than it is now, simply linking the A80 northeast of Cumbernauld (now J6A of the M80) to the A803 at Bonnybridge (along what is now the spur). This section is still part of the B816, but the route has been extended at both ends, south alongside the motorway along the former A80 into Cumbernauld and east along a new-build road into Falkirk. The original entrance into Falkirk was along Union Road to end on the A9 Main Street.