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| Middleborough Secondary | |
|---|---|
| Name | Middleborough Secondary |
| Type | Railroad line |
| Locale | Middleborough, Massachusetts |
| Owner | Massachusetts Bay Transportation Authority |
| Operator | Bay Colony Rail, CSX Transportation |
| Length | 15 mi |
| Tracks | 1–2 |
| Gauge | Standard gauge |
| Open | 19th century |
Middleborough Secondary is a regional railroad corridor in southeastern Massachusetts historically serving freight, passenger excursions, and commuter proposals. The line connects industrial hubs and port facilities in Plymouth County with mainlines radiating toward Boston, Providence, and Cape Cod, carrying commodities, seasonal tourist traffic, and intermittent commuter operations. Its alignment, structures, and service patterns reflect layers of 19th- and 20th-century railroad consolidation, regional transportation planning, and contemporary corridor reuse.
The alignment originated in the 1840s and 1850s as part of competing railroads that included the Old Colony Railroad network, the New York, New Haven and Hartford Railroad, and local branches built by entrepreneurs linked to coastal shipping and the Whaling industry. During the late 19th century the route was absorbed amid mergers involving the Old Colony Railroad Company and later consolidated under the New York, New Haven and Hartford Railroad system. Following industry-wide restructurings in the mid-20th century, operations passed to regional freight carriers such as Bay Colony Railroad and national carriers including CSX Transportation after the breakup of Conrail. Public ownership discussions in the late 20th and early 21st centuries involved the Massachusetts Bay Transportation Authority, the Massachusetts Department of Transportation, and local municipalities concerned with restoration for passenger service. Preservation advocates referenced projects like the CapeFLYER seasonal service and excursion connections with the Cape Cod Central Railroad as models for reviving passenger usage.
The corridor runs from junctions with the CSX Boston Line and Middleboro Secondary Junction southward toward the Cape Cod Canal approaches and branch connections to the Pilgrim Nuclear Power Station freight spurs and port sidings near Plymouth Harbor. Key civil structures include wooden trestles, masonry culverts, and a notable swing or bascule drawbridge structure influenced by designs used on the Old Colony mainline over navigable waterways. Track geometry varies with sections of single and double track, traditional jointed rail in branch segments, and welded rail on higher-traffic stretches; signaling includes remnants of manual signal boxes and federally regulated grade crossings overseen by the Federal Railroad Administration. Right-of-way ownership is split among municipal jurisdictions, the Massachusetts Department of Transportation, and private railroads, with easements related to utility corridors and the Southeastern Regional Transit Authority bus-rail coordination agreements.
Freight operations historically moved construction aggregate, building materials, municipal waste, and maritime transload commodities to and from interchange points with CSX Transportation and shortline operators such as Bay Colony Railroad. Seasonal passenger excursions and special-event trains have been operated by heritage operators including Cape Cod Central Railroad and private tourist consortia coordinating with local chambers of commerce. Proposals for commuter rail extension have been pursued by the Massachusetts Bay Transportation Authority and regional planning bodies like the Metropolitan Area Planning Council, exploring integration with existing commuter lines such as the Middleborough/Lakeville Line and connections to South Station and Providence Station intercity services. Track capacity limitations and freight-priority dispatching are managed under interchange agreements and track access contracts with freight owners.
Freight consists of general-purpose covered hoppers, gondolas, centerbeam flatcars, and tank cars rostered by shortlines and CSX Transportation interchange manifests. Heritage and excursion consists have used diesel locomotives such as EMD GP7, EMD GP9, and GE U18B models, along with restored coaches and parlor cars from private heritage pools. Maintenance-of-way fleets include ballast regulators, tie inserters, and hi-rail vehicles supplied by regional contractors and equipment lessors affiliated with the Association of American Railroads supply chain. Signal and communications equipment reflects mixed analog and digital upgrades compatible with Positive Train Control implementation milestones mandated by federal rulemaking.
The corridor supports local industries including aggregates, construction suppliers, seafood processors, and logistics centers in municipalities such as Middleborough, Massachusetts, Plymouth, Massachusetts, and adjacent Cape communities. Seasonal excursion services drive tourism revenues tied to coastal attractions and heritage festivals promoted by regional visitor bureaus and the Plymouth County Chamber of Commerce. Local planning commissions and economic development authorities have cited rail-served sites as catalysts for industrial redevelopment, leveraging state grants administered through the MassDOT Rail and Transit Division and federal economic programs administered by the United States Department of Transportation.
Recorded incidents on the corridor have included grade crossing collisions, derailments involving empty and loaded hoppers, and infrastructure failures such as track washouts during storm events linked to Nor'easters and tropical systems. Investigations have involved the National Transportation Safety Board and the Federal Railroad Administration when federally reportable thresholds were exceeded. Safety upgrades over time included improved grade-crossing protections, vegetation management programs, and coordination with emergency services in neighboring towns for hazardous-materials response under Pipeline and Hazardous Materials Safety Administration guidelines.
Preservation groups and municipal stakeholders have pursued restoration of stations, adaptive reuse of right-of-way for multiuse trails where rail operations cease, and heritage operation partnerships modeled after the Cape Cod Central Railroad and Seashore Trolley Museum collaborations. Future development discussions involve potential commuter rail extension projects championed by the Massachusetts Bay Transportation Authority, state capital funding through the Massachusetts Transportation Infrastructure Program, and private-public partnerships for freight terminal upgrades tied to port revitalization initiatives coordinated with the Massachusetts Port Authority. Conservation reviews reference coastal resilience strategies involving the Massachusetts Office of Coastal Zone Management for protecting low-lying track segments.
Category:Rail infrastructure in Massachusetts Category:Rail lines in Plymouth County, Massachusetts