Mostrar 100 resultados

Termo de Locais Nota de âmbito contar Descrição arquivística contar Registo de autoridade
Thames Tunnel, London, England 0 0
Schuylkill Chain Bridge, Philadelphia, United States (1809) 0 0
Niagara Suspension Bridge, United States and Canada (1855)

Usado por: Niagara Railway Suspension Bridge, Niagara Falls Suspension Bridge, International Suspension Bridge

  • Designed by John Alexander Roebling, the Niagara Suspension Bridge was opened in 1855 as the first working railway suspension bridge in the world. Using wire cables made according to Roebling's patented process, the bridge consisted of two decks: an upper railway deck and a lower deck for pedestrians and carriages, (the lower deck was opened to traffic a year earlier in 1854). In 1880 the wooden deck structures were replaced and in 1886 the limestone towers were replaced with an iron and steel structure. The whole bridge was eventually replaced in 1897 according to an arch bridge design by Leffert L Buck. The bridge project was initiated in 1846 by politician William Hamilton Merritt who was inspired by the Fribourg Suspension Bridge, Switzerland. Four engineers submitted designs to the bridge company: Edward Serrell, Samuel Keefer, Charles Ellet and John Augustus Roebling. In 1847 Ellet had been awarded the contract and by 1848 a temporary wooden structure was erected across the gorge with an iron suspended traveller. However, due to a financial dispute, Ellet left the company to work on the Wheeling Suspension Bridge. Robert Stephenson - who had recently completed the Britannia Bridge - was shortlisted to complete the project, but lost the contract to Roebling.
26 0
Pont des Invalides, Paris, France (1829) 0 0
Old Bridge, Pontypridd, Wales

Usado por: William Edwards Bridge, Pontypridd Bridge

0 0
Queenston-Lewiston Suspension Bridge, Queenston, Canada, Lewiston, United States (1851) 0 0
queens 0 0
Fairmount Suspension Bridge, Fairmount, United States (1842) 0 0
schuylkill 0 0
Permanent Bridge, Philadelphia, United States (1805) 0 0