Typically, highway bridges have about 50 years. But over in...

Typically, highway bridges have about 50 years. But over in England, they have iron bridges approaching 250 years. In France, there are Roman aqueducts that are approaching 2,000 years old. So a bridge can last a very long time if it's built properly in the first place and then maintained properly.

Henry Petroski Quote About Built, Highway, Iron, Last, Maintained: Typically Highway Bridges Have About...

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