Contractors on the $16 billion Hudson Tunnel project are ready to dig in.

“I was asked how many of these boring machines are there in the world, and the answer is this is it.

A joint venture of Schiavone Construction, Lane Construction and Dragados will complete the first phase of tunnel boring as part of the Palisades Tunnel construction package, according to GDC.

Construction resumed earlier this year on the Hudson Tunnel project after a federal funding dispute halted work.

The manufacturing of the tunnel boring machines occurred alongside that work and took more than a year.