John Smeaton, English engineer, designed the Coldstream Bridge and Perth Bridge (born 1724)

John Smeaton was an English civil engineer responsible for the design of bridges, canals, harbours and lighthouses. He was also a capable mechanical engineer and an eminent scholar, who introduced various scientific methodologies into engineering. Smeaton was the first self-proclaimed "civil engineer", and is often regarded as the "father of civil engineering". He pioneered the use of hydraulic lime in concrete, using pebbles and powdered brick as aggregate. Smeaton was associated with the Lunar Society.

Coldstream Bridge, linking Coldstream, Scottish Borders with Cornhill-on-Tweed, Northumberland, is an 18th-century Category A/Grade II* listed bridge between England and Scotland, across the River Tweed. The bridge carries the A697 road across the Tweed.

Perth Bridge is a toll-free bridge in the city of Perth, Scotland. A Category A listed structure, it spans the River Tay, connecting Perth, on the western side of the river, to Bridgend, on its eastern side, carrying both automotive and pedestrian traffic of West Bridge Street. An earlier bridge was demolished at the same location in 1621, and many unsuccessful attempts were made to replace it. A subscription was started by James VI and several noblemen to help with the construction cost, but the king's death in 1625 suspended the scheme and a series of ferryboats were instead used.