Bridges presentation
It was destroyed by fire in 1875, to be
replaced in iron, and later in steel. One of the first iron viaducts was the 1673ft (510m) long Crumlin
Viaduct (1857), constructed by Thomas W Kennard and designed by Charles Liddell for the
Newport-Hereford line, 217ft (66m) above the Ebbw Vale in Wales (UK). It served as the prototype
for later ones, such as the Viaduc de la Bouble (1871), a series of lattice girders on cast-iron towers
flared at the bottom, built under the direction of Wilhelm Nordling. It was 1296ft (395m) long by
216ft (66m) high on the Commentry-Gannett line in France.
Figure 15 Kinzua Viaduct (1900), located on the Bradford Branch
in a remote region near the town of Kushequa in north-west
Figure 14 Portage Viaduct (1852) (USA),
Pennsylvania (USA), was originally constriucted in 1882 by the
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