Eads Bridge

By Kin Enriquez -

The longest arch bridge in the world when it was completed in 1874, the Eads Bridge in St. Louis spans the Mississippi River to connect the city to East St. Louis, Illinois. 
The 1,964-meter ribbed steel arch bridge was also the first to use steel as the primary structural material in a bridge project, and the first to use pneumatic caissons - which resulted to decompression sickness to workers - and cantilever support during construction [1]. 
The bridge has two levels, an upper road deck for cars and trucks, and a lower rail deck where a light rail line passes.  

by Kin Enriquez

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