It is being constructed by the New York City Department of Environmental Protection (DEP), the tunnel will eventually be more than 60 miles long and was started in 1970 and is expected to be complete in 2020.
It is being constructed by the New York City Department of Environmental Protection (DEP), and is intended to improve the water supply system in New York City. The tunnel will eventually be more than 60 miles long and was started in 1970 and is expected to be complete in 2020.