Charles Mound, located in northwestern Illinois, has the state's highest elevation at 1,235 feet above sea level.
Five feet six inches !
Yes. The Quebec Bridge, which crosses the lower Saint Lawrence River in Canada, is the largest cantilever bridge in the world. Each cantilever spans 177m, and the total length of the bridge is 987m.
15 feet.
21 feet
100.55 feet is 100.55 feet!
4 feet by 4 feet.
5280 feet.
4 feet!
144 feet
6 feet
33 feet.