The Iron Bridge crosses the River Severn in Shropshire, England. It was the firstarch bridge in the
The Iron Bridge crosses the River Severn in Shropshire, England. It was the firstarch bridge in the world to be made of cast iron, a material which was previously too expensive to use for large structures. However, a new blast furnace nearby lowered the cost and encouraged local engineers and architects to solve a long-standing problem of a crossing over the river. (Source: Wikipedia) -- source link
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