View Larger Image Oroville Dam repair costs will top $500 million U.S. News » The costs to repair the nation’s tallest dam after a nearly catastrophic failure of the spillways will nearly double the original estimate of $275 million, a California Department of Water Resources official said Thursday. The project required far more excavation and concrete than expected and the state revised plans to shore up the emergency spillway, doubling the amount of concrete it will require. By Michelle|2018-01-12T12:11:47-08:00October 19, 2017|California, Dams, Oroville Dam|Comments Off on Oroville Dam repair costs will top $500 million Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTelegramTumblrPinterestVkXingEmail About the Author: Michelle Related Posts ‘A fiasco from the beginning’ — Caltrans’ costs soar on $1.1 billion San Francisco tunnels ‘A fiasco from the beginning’ — Caltrans’ costs soar on $1.1 billion San Francisco tunnels The Boring Company: What 8 Cities Really Think of Elon Musk’s Tunnel Vision Gallery The Boring Company: What 8 Cities Really Think of Elon Musk’s Tunnel Vision Sea level rise could threaten California cities and ports by 2040 Gallery Sea level rise could threaten California cities and ports by 2040 Can America Still Build Big? A California Rail Project Raises Doubts Gallery Can America Still Build Big? A California Rail Project Raises Doubts