Part of a rail line will remain closed after surveys found tunnel floors need to be strengthened. No trains will travel ...

Delhi Metro has achieved a major milestone on its Phase 4 expansion. A tunnel boring machine (TBM) successfully completed a ...

The ‘Tesla in Tunnels’ project will connect the Nashville International Airport to downtown.

"We have a number of operational questions." Details surface about Elon Musk's new underground project: 'A transformative ...