Project Carryall was a 1963 United States Atomic Energy Commission (AEC) proposal to use nuclear explosives to excavate a path for Interstate 40 (I-40) and the Atchison, Topeka and Santa Fe Railway (AT&SF) through the Bristol Mountains of southern California. The project was proposed as a component of Project Plowshare, which sought ways to use nuclear devices in public works and industrial development projects.