brcause the bridge designer needed steel for the bridges construction, therefore steel had to be made for the bridge.
The ANZAC Bridge in Sydney is made of structural steel, steel cable and concrete
The Brooklyn Bridge is made of steel. The Bessemer process made steel affordable.
the harbour bridge is made up of steel and approximately 6.5 million rivets
Steel bud, just steel. The chords that help support the bridge are made from carbon steel, which was a relatively new material for the time it was made.
It's an arch bridge made of steel
steel
Lions Gate Bridge is made of steel and concrete.
The Skye Bridge is constructed of concrete and 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.
steel
steel
steel