Complex sentence: The Washingtonian was also Train 185, which came from New York and later along with most other regular trains on the Northeast Corridor, folded into one NortheastDirect in 1995.
Split into simpler sentences: The Washingtonian was also Train 185, which came from New York. Later, along with most other regular trains on the Northeast Corridor, it folded into one "NortheastDirect" in 1995.