Thomas Telford's Bridge, Dunkeld over the Tay

The heaviest load Telford  could have imagined crossing the bridge would be four horse and a cart, and yet today it can carry a 40 ton lorry with a safety factor of over X2. It is an arc rather than a hump-back, which was a revolutionary new design. With the building of the Bridge in 1809, the alignment of the town turned to a South-North orientation. The road north would evolve eventually into the A9 and carry the traffic into the Highlands until the New A9 by-pass was opened in 1977. Extra - Cyclist crossing the bridge into Dunkeld.