Completed in 1935-36, it was then the largest concrete structure and largest hydropower plant in the world. Location: Arizona-Nevada border, Nevada. Key figure: 3.25 million cu yd concrete. Part of the One State One Record (USA) campaign. Reference record compiled from public sources; not certified by The Book of World Records. Source: https://www.npr.org/2010/06/08/127236641/a-concrete-colossus-the-hoover-dam-at-75
Record no. MRB-2026-007198
World's Largest Concrete Structure When Completed
Reference Record – Not Certified
This record is compiled from publicly available sources for reference. It has not been examined or certified by The Book of World Records.