Sydney’s ‘unbuildable motorway’ to be completed after two-year delay caused by sinkholes
Sydney’s $3.1bn M6 project, dubbed the potentially “[unbuildable motorway](https://www.theguardian.com/australia-news/2025/jun/29/could-the-m6-be-sydneys-unbuildable-motorway-due-to-sinkholes-and-a-reverse-fault)”, will resume after the state government struck a deal with contractors, ending a two-year stalemate during which works were halted