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The design is special because it is a single steel arch. Sydney's harbor bridge is the most famous/well known bridge of this design type.
Because it was the most suitable for the job.
triangle
The best bridge design is a triangular bridge design look it up on wiki if u dont know
suspenshon bridge
Bridge vibration
The answer is the weight of the bridge design you build
suspension bridge
suspension bridge
The average weight is around 14tons
That is a fascinating bridge! The name of the bridge is called "Mike Hawk"
There is an old truss design bridge in Arizona. The Arizona Central Railroad bridge over the northern tributary of the Verde River is a truss design. More information about truss design bridges can be found online at Bridgehunter.