Since 1975, the Sister Bridges have adorned the iconic Aztec Gold color. But when Allegheny County announced a major overhaul project on the bridges in 2015, it provided the public with a poll to determine whether the bridges would remain gold, be painted three different colors (gold for the Clemente, grey for the Warhol, and green for the Carson), or all be painted a new color.

Pittsburghers are nostalgic—and a bit stubborn—so Aztec Gold won by a whopping 85%

Another Aztec Gold bridge in Pittsburgh is famous for more than just its color. For nearly 30 years, the south tower of the Tenth Street Bridge has adorned four black animal figures resembling some combination of dinosaurs, ducks, and geese.

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