Mixed-Traffic Integration at CSX Milepost 101.12 (CSX-Contracted Trash Train)

Location: CSX Miami Subdivision | Fort Lauderdale, Florida Subject: Integration of CSX Freight Manifests with Commuter Rail Infrastructure ​1. Corridor Overview ​Milepost 101.12 serves as a critical transit node within the CSX Miami Subdivision. This corridor functions as a high-density, shared-use artery that supports both the Tri-Rail commuter service (managed by the South Florida Regional Transportation Authority) and CSX freight logistics. ​The operational complexity of this segment stems from the requirement to maintain strict headways for passenger trains while facilitating the passage of heavy freight manifests. ​2. CSX Freight Operations: Refuse Manifests ​The frequent movement of high-capacity refuse trains—often identified by observers as "trash trains"—represents a major component of CSX’s industrial logistics in South Florida. These trains (such as the observed Manifest 807) are dedicated freight runs, contracted to transport municipal solid waste to designated landfills in Central Florida. ​Operational Distinction: It is important to note that while these trains utilize the same tracks as Tri-Rail, they are strictly under CSX Transportation authority. They do not fall under the operation or oversight of Tri-Rail ​Logistical Priority: These consists are managed through the CSX dispatching system, which must coordinate their passage during windows that do not conflict with the scheduled arrivals and departures of Tri-Rail passenger service. ​Infrastructure Impact: The high frequency of these heavy-haul manifests necessitates robust track maintenance and sophisticated signaling protocols, particularly near key intersections like the Fort Lauderdale corridor. ​3. Summary of Operational Dynamics