Jacksonville Terminal Subdivision

Norfolk Southern Railway's Springfield Lead also crosses the A Line at Grand Junction.

[2] The A Line continues from Grand Junction south through Moncrief Yard to Beaver Street Interlocking.

[3] The S Line currently runs east from Beaver Street Interlocking west to Baldwin.

It also connects with the Callahan Subdivision to the north and the Florida Gulf and Atlantic Railroad to the west at Baldwin.

[2] Within the Jacksonville Terminal Subdivision, CSX operates two major yard facilities.

[3] Duval Yard, also known as Jax Ramp, is located just northwest central Jacksonville.

CSX's A Line north of Jacksonville (which leads to the Nahunta Subdivision) was originally part of the East Florida Railway.

The S Line previously continued east and north beyond Beaver Street Interlocking toward Panama Park prior to the 1990s.

In the late 1970s, the Seaboard Coast Line built Duval Yard and Intermodal Ramp and associated tracks on the northwest side of town.

Duval was built to handle intermodal traffic, since the areas other yards were too overcrowded by then.