how long did it take to construct mt rushmore?
<answer> The construction of Mt. Rushmore took 14 years. <context> It took 14 years to build Mount Rushmore. Carving began in 1927 and ended in 1941, so it took 14 years to carve Mount Rushmore. Because they wanted to help people remember our forefathers. It took 14 years to build Mount Rushmore.:)   400. The construction of Mt. Rushmore took 14 years.