One of the highest bridges in the United States, the bridge features a 1,700-foot span that is the longest steel arch in the Western Hemisphere. The Washington Monument could fit under its 876-foot arch with more than 100 yards to spare.
The two-hinged deck arch spans a gorge that, before its completion in 1977, required drivers 40 minutes to navigate because of narrow and winding roads. The steel and concrete bridge weighs more than 88 million pounds. Its unpainted, weathering steel oxidizes with age and becomes a rustic brown color that blends the bridge into its rugged surroundings.
Stamp Issue: 2011.04.11