Hoboken's PATH station is weeks from reopening after suffering severe flooding during Hurricane Sandy.
Officials from the Port Authority of New York and New Jersey gave a tour of the underground tracks Tuesday.
The tracks under the station were flooded with eight feet of water four weeks ago. It took about a week to get all the water out, and crews are working around the clock to test switches, signals and cables.
Some of the equipment is 80 years old. The Hoboken station itself dates back more than 100 years and has flooded before, though not as seriously.
PATH service has been restored from Newark and Jersey City into Manhattan in recent weeks. Thousands of commuters from Hoboken have had to use ferries and buses to get across the Hudson.