The long-promised extension of the métro’s Blue Line will be built primarily by a tunnel-boring machine that is among the largest of its kind in the world.

Seven months after beginning its journey, Elaine the tunnel boring machine has completed its subterranean mission drilling out the Northside Interceptor Tunnel (NSIT). The 16.5-foot diameter, ...

Fourteen stories beneath the median on Park Avenue between 37th and 38th Streets lies one of the gargantuan machines that dug the tunnels for the East Side Access – the project to bring the Long ...

The first of two tunnel boring machines constructing the HS2 line to Euston has started its 4.5-mile journey from Old Oak Common. HS2 begins tunnelling to central London with chief secretary to the PM ...