# Main Line (Seaboard Air Line Railroad)

The Seaboard Air Line Railroad’s Main Line was the backbone of the Seaboard Air Line Railroad's network in the southeastern United States. The main line ran from Richmond, Virginia to Tampa, Florida, a distance of over 800 miles. Along its route it passed through Petersburg, Raleigh, Columbia, Savannah, Jacksonville, and Ocala, Florida. While some segments of the line have been abandoned as of 2023, most of the line is still in service and is owned by the Seaboard Air Line's successor, CSX Transportation as their S-Line.

## History

By the time the Seaboard Air Line Railroad (known as the Seaboard Air Line Railway before 1946) was officially created, track that would make up its main line had already been built by the company's predecessors. The main line was built in the late 1800s by the following companies:
* Richmond, Petersburg and Carolina Railroad, Richmond, Virginia to Norlina, North Carolina
* Raleigh and Gaston Railroad, Norlina to Raleigh, North Carolina
* Raleigh and Augusta Air Line Railroad, Raleigh to Hamlet, North Carolina
* Palmetto Railroad, Hamlet to Cheraw, South Carolina
* Chesterfield and Kershaw Railroad, Cheraw to Camden, South Carolina
* Predecessors of the Florida Central and Peninsular Railroad:
** South Bound Railroad, Camden to Savannah, Georgia
** Florida Central and Peninsular Railroad Northern Division, Savannah to Georgia/Florida state line
** Florida Northern Railroad, state line to Yulee, Florida
** Fernandina and Jacksonville Railroad, Yulee to Jacksonville, Florida
** Florida, Atlantic and Gulf Central Railroad, Jacksonville to Baldwin, Florida
** Florida Railroad, Yulee to Baldwin to Waldo, Florida
** Florida Transit and Peninsular Railroad Tampa Division, Waldo to Tampa, Florida
By 1900, the Seaboard Air Line Railway was incorporated, which brought together the predecessor companies together and created the main line north of Camden, South Carolina. At this time, the company had leased the Florida Central and Peninsular Railroad (FC&P) network which expanded the system through Georgia and Florida. The Seaboard Air Line would fully not own the FC&P network until 1903.
The Seaboard Air Line would run many historic passenger services over its main line, many of which ran from New York to Florida. Some of the Seaboard's passenger trains included the Florida and Metropolitan Limited, Atlanta Special, Suwanee River Special, Orange Blossom Special, Southern States Special, Cotton Blossom, Palmland, Silver Meteor, Silver Comet, Silver Star, Sunland, and Tidewater.
Seaboard also had a number of fast, high-priority freight trains called Red Ball freights between various points on its system. However, from 1918 to 1966, a number of through freight trains instead ran the Andrews and Charleston Subdivisions between Hamlet, North Carolina and Savannah, Georgia to allow passenger trains to be prioritized on the main line.
The Seaboard Air Line installed Centralized traffic control along the main line in the 1940s to improve efficiency. The Seaboard Air Line would also be the first railroad to install a talking hot box detector (the predecessor to the modern defect detector). This first talking hot box detector was installed on the main line in Riceboro, Georgia.
In 1967, the Seaboard Air Line merged with their long-time rival, the Atlantic Coast Line Railroad (ACL). The ACL also had a main line running from Richmond, Virginia to Tampa, Florida that was roughly parallel to the SAL’s main line. The two main lines crossed each other in Chester, Savannah, Jacksonville, and Plant City. After the merger was complete, the company was named the Seaboard Coast Line Railroad (SCL), who largely retained both main lines in the combined network. To differentiate the two main lines, the Seaboard Coast Line designated the SAL’s main line as the S-Line and the ACL’s main line as the A-Line. The letter S was added as a prefix to the mileposts on the S-Line (S was also added to the beginning of the pre-existing letter prefixes on the SAL’s branch lines).
In 1980, the Seaboard Coast Line's parent company, Seaboard Coast Line Industries (SCLI), merged with the Chessie System, creating CSX Corporation. CSX Corporation initially operated the Chessie and SCLI Systems separately, however in 1982 they began the process of consolidating the railroads of both holding companies. This began with the formation of the Seaboard System Railroad, which merged all of the railroads owned by SCLI into one. In 1986, Seaboard System renamed themselves CSX Transportation (CSXT), and by August 1987, the Chesapeake and Ohio Railway -the final remaining railroad under the Chessie System brand- was merged into CSXT.

## Current conditions

As of 2023, much of the line is still in service, though it has been abandoned in some places.
At the north end, CSX still operates the line from Richmond to just north of Chester, which is now CSX's Bellwood Subdivision. The short segment of the S-Line from Centralia (just north of Chester, Virginia) to Collier Yard (just south of Petersburg, Virginia) was abandoned by the Seaboard Coast Line shortly after the 1967 merger. The remaining track was connected to the A-Line in an effort to consolidate the two lines on to the A-Line though Petersburg. Some of the supports that once held the S-Line's bridge over the Appomattox River are still standing on the northwest side of Petersburg.
CSX abandoned the S-Line from Collier Yard to Norlina, North Carolina in 1987. CSX sold the right of way to the states of Virginia and North Carolina in 2019. The states are doing preliminary work to rebuild the line for high-speed passenger service as part of the Southeast High Speed Rail Corridor. Virginia has since bought its portion of the line, and, as December 2023, North Carolina is negotiating a deal to buy the portion in their state.
The S-Line is still in service from Norlina, North Carolina to Savannah, Georgia. This segment is now CSX's Norlina Subdivision, Aberdeen Subdivision, Hamlet Subdivision, Columbia Subdivision, and Savannah Subdivision. Amtrak still operates on this segment from Raleigh to Savannah. This is the only segment of the S-Line that still carries regular passenger service.
From Savannah to the Ogeechee River in Richmond Hill, Georgia, the line was abandoned and consolidated with the A-Line shortly after the 1967 merger. Though, the original S-Line bridge over the Ogeechee River remained with its tracks removed next to the A-Line bridge until 2019.
The S-Line was severed as a through route between Savannah and Jacksonville in 1986 when track was abandoned between Riceboro and Bladen, Georgia. Additional track was abandoned between Bladen and Seals, Georgia four years later. The shortline Riceboro Southern Railway now operates from Richmond Hill to Riceboro, and the First Coast Railroad operates from Seals, Georgia to Yulee, Florida. Both the First Coast Railroad and the Riceboro Southern Railway took over their respective sections of the S-Line in the mid 2000s and are both owned by Genesee & Wyoming. South of Yulee to Panama Park near Jacksonville is now CSX's Kingsland Subdivision. The S-Line Urban Greenway is now on the former right of way in northeast Jacksonville.
The S-Line in Florida is CSX's primary freight route through the peninsula. From Jacksonville to Baldwin, the S-Line runs through CSX's Jacksonville Terminal Subdivision and runs on the Wildwood Subdivision from Baldwin to Owensboro. A short section of the S-Line from Owensboro to Zephyrhills via Dade City was abandoned by the Seaboard Coast Line shortly after the 1967 merger in favor of the ex-ACL line which circumnavigated the towns instead of going right through them. The Hardy Trail was built on some of the former right of way near Dade City in 2019. From Zephyrhills to Gary in Tampa is now CSX's Yeoman Subdivision and part of the Tampa Terminal Subdivision. The S-Line has been abandoned beyond Gary, which has severed the line from Tampa Union Station.

## Historic stations

| State | Milepost | City/Location | Station | Connections and notes |
| VA | SRN 3.9 | Richmond | Hermitage | junction with Richmond, Fredericksburg and Potomac Railroad |
| VA | SRN 0.0 S 0.0 | Richmond | Main Street Station | Amtrak Northeast Regional originally opened in 1901 closed in 1950s with service relocated to Broad Street Station reopened in 2003 junction at Triple Crossing with:Richmond and Alleghany Railroad (C&O)Richmond and York River Railroad (SOU) |
| VA | S 0.7 | Richmond | Manchester | junction with Richmond and Danville Railroad (SOU) |
| VA | S 8.6 | Bellwood | Bellwood | junction with Hopewell Subdivision |
| VA | S 13.0 | Chester | Chester | junction with Atlantic Coast Line Railroad Main Line |
| VA | S 18.7 | | Lynch | |
| VA | S 22.9 | Petersburg | Petersburg | |
| VA | S 27.5 | | Ryan | |
| VA | S 31.1 | Burgess | Burgess | |
| VA | S 37.5 | Dinwiddie | Dinwiddie | |
| VA | S 41.8 | DeWitt | DeWitt | |
| VA | S 47.6 | McKenney | McKenney | |
| VA | S 52.2 | Rawlings | Rawlings | |
| VA | S 57.1 | Warfield | Warfield | |
| VA | S 61.1 | Alberta | Alberta | junction with Virginian Railway (N&W) |
| VA | S 63.9 | Cochran | Cochran | |
| VA | S 67.8 | Grandy | Grandy | |
| VA | S 74.0 | | Skelton | |
| VA | S 79.0 | La Crosse | La Crosse | junction with Atlantic and Danville Railway (N&W) |
| VA | S 83.7 | | Hagood | |
| VA | S 86.4 | | Bracey | |
| NC | S 91.0 | | Paschall | |
| NC | S 94.9 | Wise | Wise | |
| NC | S 98.4 | Norlina | Norlina | originally Ridgeway Junction junction with Portsmouth Subdivision |
| NC | S 106.5 | Middleburg | Middleburg | |
| NC | S 109.8 | | Greystone | |
| NC | S 113.8 | Henderson | Henderson | junction with:Durham SubdivisionOxford & Henderson Railroad (SOU) |
| NC | S 118.3 | | Gill | |
| NC | S 121.8 | Kittrell | Kittrell | |
| NC | S 130.3 | Franklinton | Franklinton | junction with Louisburg Subdivision |
| NC | S 136.5 | Youngsville | Youngsville | |
| NC | S 140.5 | Wake Forest | Wake Forest | |
| NC | S 154.8 | Raleigh | Edgeton | |
| NC | S 156.1 | Raleigh | Raleigh | junction with:Raleigh, Charlotte and Southern Railway (SOU)Norfolk Southern Railway (SOU) |
| NC | S 160.2 | Raleigh | Meredith College | |
| NC | S 160.5 | Raleigh | Method | |
| NC | S 168.3 | Cary | Cary | Amtrak Silver Star, Carolinian, and Piedmont station rebuilt in 1996 junction with North Carolina Railroad (SOU) |
| NC | S 171.1 | Apex | Apex | junction with Durham and Southern Railway |
| NC | S 177.3 | New Hill | New Hill |
| NC | S 179.8 | Bonsal | Bonsal | junction with Durham and South Carolina Railroad (SOU) |
| NC | S 181.1 | | Merry Oaks | |
| NC | S 187.3 | Moncure | Moncure | junction with Pittsboro Subdivision |
| NC | S 195.1 | Colon | Colon | junction with Raleigh and Western Railway (SOU) |
| NC | S 198.9 | Sanford | Sanford | junction with:Atlantic Coast Line Railroad Sanford BranchAtlantic and Western RailwayAtlantic and Yadkin Railway (SOU) |
| NC | S 205.6 | Lemon Springs | Lemon Springs | |
| NC | S 211.1 | Cameron | Cameron | |
| NC | S 216.6 | Vass | Vass | also known as Winder |
| NC | S 219.9 | | Fleet | |
| NC | S 225.0 | Southern Pines | Southern Pines | Amtrak Silver Star |
| NC | S 228.7 | Aberdeen | Aberdeen | junction with:Aberdeen and Asheboro Railroad (NS)Aberdeen and Rockfish Railroad |
| NC | S 238.2 | | Mackall | |
| NC | S 239.4 | Hoffman | Hoffman | |
| NC | S 253.4 | Hamlet | Hamlet | Amtrak Silver Star station rebuilt in 1900 junction with:Andrews Subdivision (via East Junction)Monroe SubdivisionWilmington Subdivision |
| NC | S 260.8 | | Osborne | |
| SC | S 269.3 | Wallace | Wallace | |
| SC | S 271.8 | Cheraw | Cheraw | junction with: Atlantic Coast Line Railroad Wadesboro—Florence LineChesterfield and Lancaster Railroad (SAL)Bennettsville and Cheraw Railroad |
| SC | S 279.8 | | Gillespie | |
| SC | S 284.9 | Patrick | Patrick | station rebuilt in 1900 |
| SC | S 292.0 | | Middendorf | |
| SC | S 299.3 | McBee | McBee | junction with Hartsville Subdivision |
| SC | S 307.0 | Bethune | Bethune | |
| SC | S 312.6 | Cassatt | Cassatt | |
| SC | S 319.5 | | Shepard | |
| SC | S 326.5 | Camden | Camden | Amtrak Silver Star |
| SC | S 330.7 | Lugoff | Lugoff | |
| SC | S 339.0 | | Blaney | later known as Elgin |
| SC | S 349.4 | | Weddell | |
| SC | S 358.4 | | Elmwood | |
| SC | S 360.7 | Columbia | Columbia | Amtrak Silver Star rebuilt in 1903 and 1991 junction with: Atlantic Coast Line Railroad Sumter—Columbia LineCharlotte, Columbia and Augusta Railroad (SOU)Spartanburg, Union and Columbia Railroad (SOU)Carolina Midland Railway (SOU) |
| SC | S 362.5 | Cayce | Cayce | |
| SC | S 366.5 | | Dixiana |
| SC | S 371.6 | Gaston | Gaston | |
| SC | S 381.0 | Swansea | Swansea |
| SC | S 385.6 | Woodford | Woodford | |
| SC | S 393.7 | Livingston | Livingston | |
| SC | S 402.0 | Norway | Norway | |
| SC | S 414.1 | Denmark | Denmark | Amtrak Silver Star junction with Atlantic Coast Line Railroad Florence—Robbins Line |
| SC | S 417.7 | Govan | Govan | |
| SC | S 426.2 | Ulmer | Ulmer | |
| SC | S 436.0 | Fairfax | Fairfax | junction with Charleston & Western Carolina Railway (ACL) |
| SC | S 442.8 | Gifford | Gifford | |
| SC | S 450.5 | Estill | Estill | |
| SC | S 460.2 | Garnett | Garnett | |
| GA | S 469.0 | Clyo | Clyo | |
| GA | S 478.8 | | Stillwell | |
| GA | S 481.2 | Rincon | Rincon | |
| GA | S 490.1 | | Meinhard | |
| GA | S 497.3 | Savannah | Central Junction | junction with: Savannah Subdivision & Charleston SubdivisionAtlantic Coast Line Railroad Main LineSavannah and Atlantic Railroad (CoG/SOU) |
| GA | S 501.8 | Savannah | Savannah Union Station | accessed via a spur track |
| GA | S 512.4 | Savannah | Burroughs | junction with Atlantic Coast Line Railroad Main Line |
| GA | S 515.6 | Richmond Hill | Richmond Hill | |
| GA | S 522.1 | Limerick | Limerick | |
| GA | S 527.2 | Midway | Dorchester | also known as Dorchester |
| GA | S 529.1 | Riceboro | Riceboro | |
| GA | S 537.1 | | Jones | |
| GA | S 540.1 | Warsaw | Warsaw | |
| GA | S 544.1 | Townsend | Townsend | |
| GA | S 550.4 | | Cox | |
| GA | S 556.8 | Everett | Everett | junction with Macon and Brunswick Railroad (SOU) |
| GA | S 564.4 | | Thalmann | junction with Brunswick and Birmingham Railroad (AB&C/ACL) |
| GA | S 568.4 | Bladen | Bladen | junction with Atlantic Coast Line Railroad Waycross—Brunswick Line |
| GA | S 573.8 | | Hayner | |
| GA | S 578.3 | Waverly | Waverly | |
| GA | S 582.6 | White Oak | White Oak | |
| GA | S 587.7 | Woodbine | Woodbine | |
| GA | S 593.4 | Seals | Seals | |
| GA | S 598.9 | Kingsland | Kingsland | junction with St. Mary's Railroad |
| FL | S 605.4 | Gross | Gross | junction with Gross Subdivision |
| FL | S 613.5 | Yulee | Yulee | junction with Fernandina Subdivision |
| FL | S 619.1 | | Tisonia | |
| FL | S 625.0 | Jacksonville | Eastport | junction with Dames Point Spur |
| FL | SO 630.1 | Jacksonville | Dames Point | located on Dames Point Spur served Port of Jacksonville facilities on Dames Point and Blount Island |
| FL | S 629.5 | Jacksonville | Panama Park | junction with Jacksonville and Southwestern Railroad (ACL) |
| FL | S 638.0 | Jacksonville | Jacksonville Union Terminal | junction with: Florida East Coast Railway Main LineAtlantic Coast Line Railroad Main LineAtlantic, Valdosta and Western Railway (GS&F/SOU) |
| FL | SP 641.6 | Jacksonville | Marietta |
| FL | S 652.5 | Baldwin | Baldwin | junction with Tallahassee Subdivision & Gross Subdivision |
| FL | S 659.0 | | Maxville | |
| FL | S 669.3 | Lawtey | Lawtey | |
| FL | S 678.4 | Starke | Starke | |
| FL | S 679.1 | Starke | Wannee Junction | junction with Wannee Subdivision |
| FL | S 680.1 | | Newnan | |
| FL | S 684.6 | Hampton | Hampton | junction with Georgia Southern and Florida Railway (SOU) |
| FL | S 690.0 | Waldo | Waldo | junction with Brooksville Subdivision |
| FL | S 696.6 | Orange Heights | Orange Heights | |
| FL | S 703.3 | Hawthorne | Hawthorne | junction with Atlantic Coast Line Railroad Palatka Branch |
| FL | S 712.3 | Lochloosa | Lochloosa | |
| FL | S 714.5 | Island Grove | Island Grove | |
| FL | S 716.9 | Citra | Citra | |
| FL | S 722.4 | Sparr | Sparr | |
| FL | S 725.8 | Anthony | Anthony | |
| FL | S 731.5 | Ocala | Silver Springs Junction | junction with Ocklawaha Valley Railroad |
| FL | S 735.3 | Ocala | Ocala Union Station | junction with: Kendrick SpurAtlantic Coast Line Railroad High Springs—Croom Line |
| FL | SQ 742.7 | | Kendrick | located on Kendrick Spur |
| FL | S 743.5 | | Santos | |
| FL | S 747.1 | Belleview | Belleview | |
| FL | S 752.0 | Summerfield | Summerfield | junction with Lake Weir Spur |
| FL | SS 758.3 | | Weirsdale | located on Lake Weir Spur |
| FL | S 756.8 | Oxford | Oxford | |
| FL | S 761.5 | Wildwood | Wildwood | junction with Orlando Subdivision |
| FL | S 766.1 | Coleman | Coleman | junction with Miami Subdivision |
| FL | S 770.4 | Lake Panasoffkee | Lake Panasoffkee | |
| FL | S 771.0 | | Ekal | also known as Sumterville Junction |
| FL | S 775.1 | Bushnell | Bushnell | |
| FL | S 778.9 | St. Catherine | St. Catherine | junction with Atlantic Coast Line Railroad High Springs—Croom Line |
| FL | S 783.2 | | Rerdell | |
| FL | S 791.2 | Lacoochee | Lacoochee | junction with Orange Belt Railway (ACL) |
| FL | S 791.9 | Owensboro | Owensboro | junction with Atlantic Coast Line Railroad High Springs—Lakeland Line |
| FL | S 797.9 | Dade City | Dade City | |
| FL | S 808.0 | Zephyrhills | Zephyrhills | junction with Atlantic Coast Line Railroad Vitis–Tampa Line |
| FL | S 811.4 | Crystal Springs | Crystal Springs | |
| FL | S 818.5 | Knights | Knights | |
| FL | S 822.8 | Plant City | Sandler Junction | junction with Plant City Subdivision |
| FL | S 823.1 | Plant City | Plant City Union Depot | junction with Atlantic Coast Line Railroad Main Line |
| FL | S 823.2 | Plant City | Lake Wales Junction | junction with Line to Welcome |
| FL | S 827.4 | Turkey Creek | Turkey Creek | junction with Sarasota Subdivision |
| FL | S 829.5 | Sydney | Sydney | |
| FL | S 832.5 | Valrico | Valrico | junction with Valrico Subdivision |
| FL | S 834.8 | Brandon | Brandon | |
| FL | S 840.9 | Tampa | Yeoman | junction with Atlantic Coast Line Railroad Tampa—Sarasota Line |
| FL | S 843.5 | Tampa | Gary | junction with Seaboard Air Line Railroad Tampa Subdivision |
| FL | S 844.9 | Tampa | Tampa Union Station | replaced original station located at Franklin and Whiting Streets |
| FL | S 845.6 | Tampa | Seddon Island Terminal | Freight terminal built in 1909 |