The South Ferry subway station, which five years ago was flooded with saltwater and sewage by Hurricane Sandy, finally reopened on Tuesday.

The gleaming new station, just 2-years-old at the time, was destroyed by 15 million gallons of sludge in October 2012. The station was flooded from the tracks to the mezzanine and all of the electrical and mechanical systems were destroyed.

The flood forced the MTA to go back to using the decrepit old South Ferry station, where riders had to be in the first five cars if they wanted to get off.

The MTA spent $369 million to repair the newer station and it now has track flood log tunnel barriers, sealed ducts, manholes and vents, and new water pumps. The new station also has an air-tempered circulation system to keep it warmer in winter and cooler in summer.

When the station opened in 2009, it had cost about $545 million to build.