After 1856 the invention of the Bessemer process for producing steel by reducing the carbon content of iron made possible the incorporation of steel into bridge construction.
They are not. Steel girders can be used because of their strength and are easily manufactured
iron, steel, concrete, stone, wood, and composites are the most common materials used in bridge construction!
The "Richmond Bridge" London, England. The design is a stone arch bridge constructed of Portland stone, construction started 1774 and completed 1777.The "Richmond Bridge" Richmond, Tasmania. The original name was "Bigge's Bridge and was constructed of sandstone, construction started in 1823 and completed in 1825.
15500 kilograms were used in the bridge construction in the late 1800's. Twenty seven people died during the construction of the bridge as well. Very notable in history and it is free to go both ways.
Sparrows point md. Bethlehem pa. Steelton pa.Johnstown pa The fabricated steel used in the construction of the Golden Gate Bridge was manufactured by plant in Trenton, New Jersey and Sparrows Point, Maryland and in three Pennsylvania towns: Bethlehem, Pottstown, and Steelton. The steel was loaded, in sections, onto rail cars, taken to Philadelphia and shipped through the Panama Canal to San Francisco. The shipment of the steel was timed to coincide with the construction of the bridge.
Over 35,000 tons of steel were used in construction of the Lupu Bridge. The Lupu Bridge is a through arch bridge over the Huangpu River in Shanghai, China, connecting the city's Luwan and Pudong districts.
metal steel
There was virtually no wire used in the construction of Tower Bridge. Its main components are 70,000 tons of concrete, 11,000 tons of steel and it is clad in Cornish granite and Portland stone.
because steel is strong:)
11,000 tons of steel.
M25 - M40 can be used..
The material used to build the bridge was wood and steel