Bridges presentation
Figure 13 Thomas Viaduct (1835), Relay, Maryland
(USA). This illustration from The United States
Illustrated, published in the 1850s, shows the heroic
proportions of this massive stone structure, constructed
while the Baltimore & Ohio Railroad was still
influenced by the British precedent of strong,
durableconstruction. Smithsonian Institution
The Thomas Viaduct on the Baltimore & Ohio Railroad (1835) (Figure 13), the Canton on the
Boston & Providence Railroad (1835), and the Starrucca on the New York & Erie Railroad (1848)
are the oldest stone viaducts and three of the great monumental structures of the USA's early
railways. Examples in Europe include the Viaduc de Barentine (1846), constructed by British
navvies under the direction of MacKenzie and Thomas Brassey in brick rather than stone, and the
Viaduc de Saint-Chamas (1847), both in France. In the United Kingdom, notable viaducts include