Editing CSX Transportation (section)

{{Short description|Class I railroad system in the US}}
{{Redirect|CSX|the parent company|CSX Corporation|other uses}}
{{Infobox rail
| railroad_name    = CSX Transportation
| logo             = CSX Corporation logo.svg
| system_map       = CSX Transportation system map.svg
| map_caption      = A map of CSX Transportation's train routes with trackage rights in purple, as of 2009. (Some routes are missing and some have since been added or removed.)
| image            = CSX 660 (9116932295).jpg
| image_caption    = CSX 660, a [[GE AC6000CW]], westbound at [[Point of Rocks, Maryland]]
| marks            = CSXT
| locale           = [[Northeastern United States|Northeastern]], [[Southern United States|Southern]], [[East North Central states|Midwestern]] United States and [[Eastern Canada]]
| start_year       = {{Start date|1986|7|1}}
| end_year         = present
| gauge            = {{Track gauge|ussg|allk=on}}
| length           = {{convert|21000|mi}}
| hq_city          = [[CSX Transportation Building]], 500 Water Street, [[Jacksonville, Florida]], U.S.
| website          = [https://www.csx.com/ csx.com]
|predecessors={{Collapsible list|[[Chessie System]]|[[Seaboard System Railroad]]|[[Baltimore and Ohio Railroad]]|[[Chesapeake and Ohio Railway]]|[[Western Maryland Railroad]]|[[Richmond, Fredericksburg and Potomac Railroad]]|[[Pittsburgh and Lake Erie Railroad]]|[[Georgia Railroad and Banking Company]]|[[Conrail]]|[[Pan Am Railways]]}}}}

'''CSX Transportation''' {{Reporting mark|CSXT}}, known colloquially as simply '''CSX''', is a [[Railroad classes|Class I]] freight railroad company operating in the [[Eastern United States]] and the Canadian provinces of [[Ontario]] and [[Quebec]]. Operating about 21,000 route miles ({{convert|21,000|mi|km|disp=output only}}) of track,<ref>CSX Transportation, Jacksonville, FL. [http://www.csx.com/index.cfm/about-csx/company-overview/ "Company Overview."] {{webarchive|url=https://web.archive.org/web/20110129015703/http://www.csx.com/index.cfm/about-csx/company-overview/ |date=2011-01-29 }} Accessed 2012-12-02.</ref> it is the leading [[subsidiary]] of [[CSX Corporation]], a [[Fortune 500]] company headquartered in [[Jacksonville, Florida]].<ref name="CSX Corporate Structure">{{Cite web |title=CSX Corporate Structure |url=https://www.csx.com/index.cfm/about-the-site/corporate-structure/ |access-date=2019-01-07}}</ref><ref name="CSX Fortune 500 (#265)">{{Cite web |title=Fortune 500 - CSX |url=http://fortune.com/fortune500/csx/ |url-status=dead |archive-url=https://web.archive.org/web/20190107105843/http://fortune.com/fortune500/csx/ |archive-date=2019-01-07 |access-date=2019-01-07 |website=Fortune |language=en-US}}</ref>

CSX Corporation was formed in 1980 from the merger of [[Chessie System]] and [[Seaboard Coast Line Industries]], two holding companies that controlled railroads operating in the [[East Coast of the United States|Eastern United States]]. Initially only a holding company, the subsidiaries that made up CSX Corporation completed merging in 1987. CSX Transportation formally came into existence in 1986, as the successor of [[Seaboard System Railroad]]. In 1999, CSX Transportation acquired about half of [[Conrail]] in a joint purchase with competitor [[Norfolk Southern Railway]]. In 2022, it acquired [[Pan Am Railways]], extending its reach into northern [[New England]].

Norfolk Southern remains CSX's chief competitor; the two share a [[duopoly]] on transcontinental freight rail lines in the east half of the US.