In which u.s. state is the highest bridge from the ground?

The highest bridge from the ground in United States is found in the "state of Colorado".

Explanation:

There are world’s tallest bridges in USA that are more than 700feet. The height of the bridge is considered as the distance between the "lowest point of surface" below the bridge to the deck of the bridge. It could be either land or water below the bridge. The tallest bridge in the state of Colorado is the "Royal Gorge Bridge" that is 955 feet. This was constructed by November 1929. George E.Cole and his company were responsible for the construction, so the bridge was named after him.

 It is a north flowing river, and is on the north eastern continent of Africa.