This week in 1885: The Forth Bridge

Stretching just over 2km (1.5 miles) and rising 46m above the high tides of the Firth of Forth, its scale is such a headache for those charged with repainting it that it has become shorthand for any job without end. It is, of course, the Forth rail bridge.

Determined not to see a repeat of the Tay Bridge disaster of 1879, no expense was spared in the construction, which cost around £3m. It's a chastening reminder of the conditions endured by Victorian engineers that the project carried a high human cost, with more than 60 workers losing their lives. Many more became seriously ill after suffering the effects of 'Caisson disease', today known as the bends, brought on when they left the compressed atmosphere of watertight structures, called caissons, used to construct the bridge's foundations.

Reporting on the early stages of the bridge's construction, The Engineer barely hints at these problems, writing, with characteristic Victorian understatement: 'the difficulties met with in preparing for and founding the piers of the Forth bridge have been neither few nor unimportant, and it's patent to even the uninitiated that causes for anxiety will neither disappear nor diminish till the steel superstructure has been completed.'