Jacksonville Terminal Subdivision
The Jacksonville Terminal Subdivision is a group of railroad lines owned by CSX Transportation in and around Jacksonville, which was historically a major railroad hub. The Jacksonville Terminal Subdivision includes about 13.0 miles of track. Lines A Line The primary line through the Jacksonville Terminal Subdivision is the A Line, which is one of CSX's main lines in the eastern United States. Within the Jacksonville Terminal Subdivision, the A Line runs from Dinsmore south, passing Jackonville's Amtrak station, and through Grand Junction (historically known as Grand Crossing). Grand Junction is where it connects with the Kingsland Subdivision. Norfolk Southern Railway's Springfield Lead also crosses the A Line at Grand Junction. The A Line continues from Grand Junction south through Moncrief Yard to Beaver Street Interlocking. Here, the A Line connects with the S Line west to Baldwin, as well as the Florida East Coast Railway and Norfolk Southern's Valdosta District. From the interlocking, the A line continues southwest to St. Johns, where it continues as the Sanford Subdivision. All of Amtrak's passenger services through Florida run on the A Line. The A Line was previously the main line of the Atlantic Coast Line Railroad. S Line The S Line currently runs east from Beaver Street Interlocking west to Baldwin. The S Line was previously the main line of the Seaboard Air Line Railroad. At Baldwin, the S Line continues south as the Wildwood Subdivision. It also connects with the Callahan Subdivision to the north and the Florida Gulf and Atlantic Railroad to the west at Baldwin. Despite being part of the S Line historically, the line's mileposts have the prefix SP. Yards Within the Jacksonville Terminal Subdivision, CSX operates two major yard facilities. Moncrief Yard Moncrief Yard is located on the A Line just north of Beaver Street Interlocking. It serves as CSX's primary classification yard for the Jacksonville area. Moncrief Yard was previously the Atlantic Coast Line Railroad's main yard in Jacksonville. Duval Yard Duval Yard, also known as Jax Ramp, is located just northwest central Jacksonville. Duval Yard serves as an intermodal terminal for Jacksonville. The yard and its connecting track were built in the late 1970s by the Seaboard Coast Line Railroad for that purpose since Moncrief Yard was becoming too overcrowded. History Railroad lines in Jacksonville were largely built at the end of the 1800s. CSX's A Line north of Jacksonville (which leads to the Nahunta Subdivision) was originally part of the East Florida Railway. The A Line south of Jacksonville (which leads to the Sanford Subdivision) was part of the Jacksonville, Tampa and Key West Railway. Both lines became part of the Plant System and later the Atlantic Coast Line Railroad. Grand Crossing was originally the junction between the East Florida Railway, the Jacksonville and Southwestern Railroad (now the Kingsland Subdivision), and the Atlantic, Valdosta and Western Railway (now Norfolk Southern). The S Line from Jacksonville west to Baldwin Junction was part of the Florida Central and Peninsular Railroad, which became part of the Seaboard