Perth Bridge

in 1766 Thomas, Earl of Kinnoull headed an effort to obtain funding for a new bridge over the River Tay at Perth. Financial backing from the government and the Earl himself, as well as public subscription led to the commission of John Smeaton, architect of the Eddystone Lighthouse, to build a new bridge at Perth. Smeaton's bridge was completed in 1771and is generally known as Perth Bridge.
It was soon put to the test. In February 1774, during a rapid thaw, broken ice became wedged under the bridge, and blocked up the river channel. Most of the town and both Inches were flooded, but the bridge stood firm. Smeaton's bridge has survived many floods since. Some of the flood levels are marked on the north side of the westmost pier.