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|Locale||three separate networks, in the Detroit, MI, Philadelphia, PA, and Newark, NJ areas|
|Dates of operation||June 1, 1999–present|
|Track gauge||4 ft 8 1⁄2 in (1,435 mm) standard gauge|
Conrail Shared Assets Operations or CSAO is the commonly used name for modern-day Conrail (reporting mark CRCX). Conrail is an American railroad company. It operates three networks—the North Jersey, South Jersey/Philadelphia, and Detroit Shared Assets Areas, where it serves as a contract local carrier and switching company for its owners, CSX Transportation and the Norfolk Southern Railway. When most of the former Conrail's track was split between these two railroads, the three shared assets areas (a total of about 1,200 miles of track) were kept separate to avoid giving one railroad an advantage in those areas. The company operates using its own employees and infrastructure, but owns no equipment outside MOW equipment.
The North Jersey Shared Assets Area stretches from the North Bergen Yard in North Bergen, New Jersey south into Jersey City and Newark, and beyond to Manville (Port Reading Junction) and Trenton, much of which is operated over Amtrak's Northeast Corridor and New Jersey Transit lines through trackage rights. Primary connections are to CSX's River Subdivision north to Albany, New York at North Bergen, NS's Southern Tier Line northwest to Buffalo, New York at Croxton Yard in Jersey City, NS's Lehigh Line west to Allentown, Pennsylvania and CSX's Trenton Subdivision southwest to Philadelphia, Pennsylvania at Manville, and the Conrail South Jersey/Philadelphia Shared Assets Area at Trenton. Oak Island Yard is the principal yard for the region with smaller ones at Bayonne, Greenville (Jersey City), Linden, Manville, Metuchen, Newark, Old Bridge and Port Reading (Woodbridge).
- National Docks Branch "NATB" - Northern Running Track at Bergen Junction, New Jersey to Upper Bay Bridge to Oak Island Yard
- Garden State Secondary formerly Chemical Coast Line "COAS" - Oak Island Yard to North Jersey Coast Line at Perth Amboy
- Lehigh Line "LEHL" - National Docks Branch, Bayonne to CSX Trenton Subdivision and NS Lehigh Line at Manville
- Perth Amboy Running Track
- Amboy Secondary "AMBS" - from William to Midway (Amtrak)
- Freehold Industrial Track - a line which diverges from the Amboy Secondary at Monmouth Junction, NJ and heads southeastward through Freehold, with an inactive portion which continues to a junction with the Southern Secondary in Farmingdale, NJ
- Sayreville Running Track and Gillespie Branch and Phoenix Branch
- Southern Secondary "SOUS" - trackage rights over NJ Transit's North Jersey Coast Line from South Amboy to Red Bank, NJ, then over the former Central Railroad of New Jersey's Southern Division from Red Bank to Lakehurst, NJ, and a mostly inactive spur to Toms River, NJ. Also connecting in Farmingdale, NJ is the Freehold Secondary.
- Port Reading Secondary "MANS" - A line that runs from Port Reading Junction and Yard to Bound Brook where it connects with the Lehigh Line - recently upgraded and may lose its 'secondary' status.
- Staten Island Railroad "NOSL" - from 'CP Ralph' in Elizabeth, NJ over the Arthur Kill Vertical Lift Bridge to Arlington Yard in Staten Island, NY including the Travis Industrial Track, which runs from Arlington Yard to a New York Department of Sanitation Waste Transfer Facility at Fresh Kills.
- Hightstown Industrial Track - An Industrial Track that runs from a junction with the Amboy Secondary in Jamesburg NJ to Cranbury NJ.
- Bonhamtown Branch- Runs from NEC south of Metuchen Station to Raritan Center, interchanges with Raritan Central Railway, serves some industries outside Raritan Center property. Includes Metuchen Yard.
The South Jersey/Philadelphia Shared Assets Area is operated out of Pavonia Yard in Camden, New Jersey, with smaller yards in Marcus Hook, Paulsboro, Millville, Morrisville, Frankford Junction, Burlington, Port Richmond and South Philadelphia.
- Atlantic City Line - trackage rights along New Jersey Transit from Bordentown Secondary at Delair, New Jersey to Winslow Junction, New Jersey
- Bordentown Secondary - CP Hatch to Northeast Corridor at Millham in Trenton, New Jersey
- Northeast Corridor - trackage rights along Amtrak (Northeast Corridor) from Northern New Jersey operations border at Princeton Junction, New Jersey to Philadelphia.
- Delair Branch - Pavonia Running tracks at CP Hatch Delair, New Jersey to CSX (Philadelphia Subdivision) at Park Junction in Philadelphia, PA.
- Pemberton Running Track - Runs from NJT CP Jordan (Pennsauken) to Hainesport, NJ.
- Beesley's Point Secondary - Vineland Secondary at CP Brown in Camden, New Jersey to Tuckahoe, NJ to Beesley's Point Industrial Track at Palermo, New Jersey
- Vineland Secondary - Camden Running track at CP Mill at the south end of Pavonia Yard in Camden to Millville, New Jersey
- Grenloch Industrial Track - the Vineland Secondary Track in North Gloucester City, NJ to the Interstate Business Park in Bellmawr, NJ.
- Penns Grove Secondary - Salem Secondary and Vineland Secondary at Woodbury, New Jersey to Deepwater Point Running Track at Penns Grove, New Jersey
- Salem Running Track - Penns Grove Secondary and Vineland Secondary at Woodbury, NJ to Swedesboro, NJ for a connection to the Southern Railroad of New Jersey's Salem Branch. Leased to SRNJ in 2018.
- Chester Secondary - CSX RG yard at Eastwick to SEPTA's Airport Line, Lester, and Chester.
The Detroit Shared Assets Area consists of:
- Detroit Line - From junction with Norfolk Southern Detroit Line in Gibraltar, Michigan at MP 20 to junction with Conrail North Yard Branch at CP-West Detroit.
- North Yard Branch - From junction with Conrail Detroit Line at CP-West Detroit to junction with Conrail Sterling Secondary at CP-North Yard.
- Sterling Secondary & Utica Industrial Track - From junction with the Conrail North Yard Branch at CP-North Yard to the end of the Utica Industrial Track at MP 27.
- Michigan Line (runs parallel to Michigan Avenue, US Hwy 12) - CP-Townline in Dearborn (junction with Amtrak Michigan Line) to CP-Bay City Jct.
- Lincoln Secondary - From junction with CSXT Toledo Terminal Subdivision at Carleton to Ecorse Junction in Detroit. Trains can operate track authority EC-1 forms issued by the CSX RL Dispatcher located in Calumet City, Illinois.
CP-West Detroit, Delray, CP-YD, and River Rouge Yard lie close to each other on the Utica/MP 20 line, giving the whole a rough K-shape. Various spurs and industrial tracks branch off from this trackage. Mileage in both directions is measured from the Michigan Central Railway Tunnel.
Conrail Shared Assets utilizes the following types of locomotives, all supplied by CSX and Norfolk Southern.
- "Conrail Operations". Conrail.com. 2011-07-18. Archived from the original on 2012-07-22. Retrieved 2012-08-11.
- http://www.choosenj.com/getattachment/Quality-of-Life/Healthcare-(1)/New-Jersey-Transportation.pdf.aspx Archived 2014-12-19 at the Wayback Machine
- "Federal Register". Office of the Federal Register, National Archives and Records Service, General Services Administration. April 12, 1982 – via Google Books.
- Southern New Jersey Freight Transportation and Economic Development Assessment Survey (PDF) (Report). New Jersey Department of Transportation. December 2010. Retrieved 2013-07-17.
- Consolidated Rail Corporation (Conrail Home Page)
- Conrail Historical Society
- Decision FD-33388 (Surface Transportation Board final decision about the Conrail split)
- Various Conrail Stuff - Maps of Conrail Breakup
- Detroit Shared Assets Area by Jeff Knorek
- Conrail Shared Assets Photo Gallery : Page 1 of 2 - by Stan's RailPix
- Conrail (Pages 1 – 25 from 2004 book)
- "Marketing Department Inspection Trip" (PDF). Conrail. October 11, 1984. Retrieved 2014-08-31.
- "Conrail Shared Assets Operation (CSAO)". http://centralnjfan.
- Abandoned Railroad Inventory and Policy (PDF) (Report). Delaware Valley Regional Planning Commission. September 1997. Retrieved 10 February 2017.
- Doherty, Tom (April 2016). "Wiseguys and Wayfreights". Railfan. Retrieved May 6, 2020.