Pedestrian fence, 21 feet
The original Nogales pedestrian fence was built more than 100 years ago to hold back cattle. The latest 21-foot fence, separating Nogales, Mexico, from Nogales, Ariz., went up in 2011. People still manage to climb over it with ladders and rope. The Nogales section of the fence extends for some miles on either side of the town. In total, there are 123 miles of pedestrian fence in Arizona.
Outside Nogales, a vehicle barrier picks up where the pedestrian fence ends, but it too eventually runs out. In total, there are 183 miles of vehicle fence in Arizona.
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