Bridges presentation
the bottom chord carrying the load. The Bayonne Bridge was designed to be 25ft (8m) longer than
the nearly identical Sydney Harbour Bridge in Australia, started five years earlier.
Bridges in areas other than Europe and the USA should be investigated, as the colonial empires of
several nations were at their peak during the autumn years of the 19th century. In India, for example,
the British built several long-span railway bridges, such as the Hooghly and the Sukkur bridges
which exceeded 1000ft (300m) in span and are interesting because they were constructed using the
simplest equipment and armies of unskilled labour.
Cantilever bridges
This structural form was mentioned in the previous section on steel bridges in the discussion of the
Eads Bridge, where the erection of the arches employed principles of the cantilever, and the Forth
Railway Bridge, perhaps the world's greatest cantilever
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