Tower Bridge William Arrol
bridge open admit
hms northumberland (f238)
the grave of sir william arrol, woodside cemetery, paisley
other notable bridges followed, including: tower bridge in london, completed in 1894. construction started in 1886 , took 8 years 5 major contractors sir john jackson (foundations), baron armstrong (hydraulics), william webster, sir h.h. bartlett, , sir william arrol & co.. employed 432 construction workers. e w crutwell resident engineer construction. 2 massive piers, containing on 70,000 tons of concrete, sunk river bed support construction. on 11,000 tons of steel provided framework towers , walkways. clad in cornish granite , portland stone, both protect underlying steelwork , give bridge pleasing appearance.
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