TIL in 1987 the US Army Corps of Engineers completed the Pikeville Cut-Through, the second-largest earth-moving operation in the western hemisphere, second to the Panama Canal. It's a 1.1km long 4-lane highway cut-through in Pikeville Kentucky.
https://en.wikipedia.org/wiki/Pikeville_Cut-Through
https://www.reddit.com/r/todayilearned/comments/153iw3j/til_in_1987_the_us_army_corps_of_engineers/
