bridges made of cast iron often shattered and collapsed under the tremendous weight of the steam locomotives, so bridge builders turned to wrought iron, which has greater elasticity under stress.
brcause the bridge designer needed steel for the bridges construction, therefore steel had to be made for the bridge.
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.
steel
The Howrah bridge in India is made of steel and is riveted, rather than having nuts and bolts in its construction. It is a cantilever, floating bridge.
The Humber Bridge is a suspension type located in the United Kingdom. Construction materials the Humber Bridge are made of consist predominately of high grade steel and concrete.
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.
i think but am not entirely sure that it is made from steel bars and concrete
They are not. Steel girders can be used because of their strength and are easily manufactured
cocret and woods. also various metals of stanless steel.
Tower Bridge construction was completed in 1894 using 11,000 tons of steel and faced with Cornish granite and Portland stone.
iron, steel, concrete, stone, wood, and composites are the most common materials used in bridge construction!
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.