Plate XXXI. Cantilevers Complete. 9th July, 1889.

Scotland's Forth Bridge bridge was built to carry the two tracks of the North British Railway one and a half miles over the Firth of Forth between South Queensferry and North Queensferry, a hundred and fifty feet above high tide. This photograph shows the gargantuan structure's recently completed cantilevers reaching across the firth like outstretched arms. The presence of this mighty bridge drastically altered both the landscape and the lives of nearby residents.

Requiring 55,000 tons of steel, 640,000 cubic feet of granite, and 8,000,000 rivets, the Forth Bridge remains one of the safest bridges in use today. Having witnessed the worst train disaster up to that time in the late 1800s, the Scottish public demanded an exceptionally sound structure. An earlier bridge had swayed and collapsed in the wind, killing seventy-five passengers and crew members on a passing night train. As a result the frightened public needed-and got-a bridge that looked as though it could never tumble down.