A List Of The Most Expensive Megaproject Flops
Boston Big Dig, USA
Everything went wrong here, from the development to the scoping. It was supposed to be a warm-up for the largest highway construction project in American history. Instead, the project has been widely criticized due to cost extra costs and a huge tunnel collapse in 2006.
Despite the fact that the excavation was completed in 2007, the project went approximately seven times over budget, costing a stunning $14 billion. When completed, the project is expected to cost more than $20 billion.