Ampere, formerly known as The Crescent, is a closed station on New Jersey Transit's Montclair Branch in the city of East Orange, Essex County, New Jersey, United States. The station depot was built originally in 1890 to service to new Crocker Wheeler plant in the district. The station was named in honor of André-Marie Ampère, a pioneer in electrodynamics and reconstructed as a new Renaissance Revival station in 1907 and 1908. The station was the second station on the branch west of Newark Broad Street Station until 1984, when Roseville Avenue station was closed. That year, the station, along with 42 others, was entered into the National Register of Historic Places on June 22. After continuous disrepair and deterioration, New Jersey Transit slowly demolished the old station, including the westbound shelter built in 1922 in 1986 and the station depot itself in 1995. The station was closed on April 7, 1991 by New Jersey Transit until the station could see better ridership. The station never reopened along with Grove Street station on the Morris & Essex Lines, also in East Orange.
