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Located along the Mississippi River in Missouri, the Gateway Arch will remain a gateway to the west, but for how long?

Timeline

GATEWAYARCHCOLLAPSE

The Arch collapses

250 years after people: The Gateway Arch's stainless steel must give up the fight, the center keystone first collapses, then the two supporting legs follow.

Video

Life After People - Gateway Arch

Life After People - Gateway Arch