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Which historic steel arch bridge, completed in 1929 near Lees Ferry, allowed vehicles to cross the Colorado River?

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Correct answer: Navajo Bridge

Completed in 1929, the Navajo Bridge was a major engineering feat that spared travelers an arduous detour or risky ferry crossing. Today, the original bridge is a pedestrian walkway, while a newer parallel bridge handles modern vehicle traffic. It is also a famous spot for viewing endangered California condors. Photo: User Leonard G. on en.wikipedia, Wikimedia Commons, CC SA 1.0.

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Source: Wikipedia (CC BY-SA)

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