BROOKLYN - Superstorm Sandy crippled the city's subway system, and News 12 went underground to see how the repairs have progressed over the past year.

The Montague Tunnel, which connects Brooklyn with Manhattan, was completely flooded, leaving the tracks, signals and other electrical wiring seriously damaged. The tunnel has been closed since August as crews keep up the work on a 14-month restoration.

MTA officials had boarded up and sand bagged train station openings ahead of the storm, but 26 million gallons of water broke through many of those barriers shutting down 468 subway stops.

The MTA says it’s since created a new department dedicated to finding new ways to better protect the transit system against future natural disasters.

Transit employees have so far dedicated 2.3 million hours to Sandy cleanup and repairs.