Miami Subdivision
The Miami Subdivision is a short CSX rail line operating just northwest of West Palm Beach, Florida. The line officially runs from a point near the North Palm Beach County General Aviation Airport southeast through Riviera Beach to Mangonia Park, Florida. At the northwest end, the line is a continuation of the Auburndale Subdivision, and at the southeast end, it continues as the state-owned South Florida Rail Corridor. The South Florida Rail Corridor was part of the Miami Subdivision prior to 1988, when CSX sold that segment of the line to the Florida Department of Transportation for $264 million to support the Tri-Rail commuter service.
A short spur known as Mission Spur splits from the line in Mangonia Park just north of the South Florida Rail Corridor boundary. Mission Spur connects with the Florida East Coast Railway’s Lewis Terminal track, which connects to FEC’s main line.History
The Miami Subdivision was completed in 1925 by a subsidiary of the Seaboard Air Line Railroad known as the Florida Western and Northern Railroad, which originated in Coleman. The Seaboard Air Line became the Seaboard Coast Line Railroad in 1967 after merging with their former rival, the Atlantic Coast Line Railroad. Under the ownership of the Seaboard Air Line and Seaboard Coast Line, the Miami Subdivision designation included the entire line from Wildwood to just south of Hialeah. After the Seaboard Coast Line Railroad became CSX Transportation in 1986, track north of Delta became the Auburndale Subdivision.
