The caption on this unused card says “The highest bridge in the world” and that was true when the card was printed.  Now, ranking #13 on Wikipedia’s list, it’s just the highest in the U.S.A.  And what does Wikipedia have to say about the current highest?:  “The rankings of the world’s tallest and highest bridges differ in part because some of the highest bridges are built across deep valleys and gorges. The Sidu River Bridge in Hubei Province of China is a suspension bridge that spans a deep river gorge. The bridge’s two towers, built on either rim of the gorge, are not tall enough for the bridge structure to be counted among the world’s tallest, but due to the depth of the river gorge, the deck height of the Sidu River Bridge is at least 496 m (1,627 ft) above the river, making it the highest bridge in the world. ”  So there!  Grade: 2