The Palmetto Subdivision is a CSX Transportation rail line in the Tampa Bay region of Florida.
[1] The line notably serves The Mosaic Company's Riverview phosphate plant near the Alafia River, TECO Energy's Big Bend Power Station in southern Hillsoborough County, and Port Manatee in northern Manatee County.
[2] The Parrish Spur and the track south of Tropicana Yard to Oneco was built earlier in 1903 by the Florida West Shore Railway, a subsidiary of the Seaboard Air Line Railroad.
[3] In 1980, the Seaboard Coast Line's parent company merged with the Chessie System, creating the CSX Corporation.
The Palmetto Subdivision also continued south of Oneco to Sarasota and Venice in the SCL era before that segment was taken over by Fort Myers-based Seminole Gulf Railway in 1987.