History

The need to bridge the Firth of Forth had been debated for decades before the Tay Bridge disaster of 28 December 1879 forced the issue. The Tay Bridge — then the longest bridge in the world — collapsed during a storm while a passenger train was crossing it, killing all 75 people aboard and exposing fundamental weaknesses in the prevailing approach to large iron bridge design. Public and parliamentary confidence in long-span bridge engineering collapsed with it.

Fowler and Baker’s cantilever design was a deliberate engineering manifesto: every element of the structure would be visibly in tension or compression, the loads clearly expressed in the geometry. The famous demonstration model — in which Baker himself sat in a suspended seat supported by two men extending their arms outwards, illustrating the cantilever principle — became one of the most reproduced engineering images of the Victorian era. Construction began in 1882. At its peak, the workforce of 4,600 men worked by gaslight through the Scottish winters. Seventy-three died — a figure that was considered acceptable at the time but haunts the bridge’s history.

The bridge opened on 4 March 1890. Queen Victoria crossed it on 28 March, knighting Benjamin Baker at the Queensferry station. The “Forth Bridge” painting cycle — the proverbial never-ending task of maintaining the painted steel surface — was finally broken in 2011, when a longer-lasting paint system applied over several years ended the need for continuous repainting that had become part of Scottish folklore.