The Richmond, Fredericksburg, and Potomac Railroad was a railroad connecting Richmond, Virginia, to Washington, D.C. The track is now the RF&P Subdivision of the CSX Transportation system; the original corporation is no longer a railroad company. The RF&P was a bridge line, with a slogan of "Linking North & South," on a system that stretched about 113 miles. Until around 1965, RF&P originated less than 5% of its freight tonnage, probably less than any other Class I railroad. For much of its existence, the RF&P connected with the Chesapeake and Ohio Railway, the Atlantic Coast Line Railroad and Seaboard Air Line Railroad at Richmond. At Alexandria and through trackage rights to Union Station in Washington, D.C., connections were made with the Pennsylvania Railroad, Baltimore and Ohio Railroad and the Southern Railway. It connected to the Washington and Old Dominion Railroad at Potomac Yard and interchanged with the Chesapeake and Ohio Railway at Doswell. It and the former Conrail properties are the only CSX lines to have cab signal requirements on their entire system. History The Richmond, Fredericksburg and Potomac Railroad was chartered on February 25, 1834, to run from Richmond north via Fredericksburg to the Potomac River. It opened from Richmond to Hazel Run in 1836, to Fredericksburg on January 23, 1837, and the rest of the way to the Potomac River at Aquia Creek on September 30, 1842. Steamboat service to Washington, D.C., and the Baltimore & Ohio Railroad was provided by the Washington and Fredericksburg Steamboat Company, later renamed the Potomac Steamboat Company, controlled by the railroad after 1845. Badly damaged during the Civil War, on October 11, 1870, an extension to the north toward Quantico was authorized at a special meeting of the company's stockholders. The company's charter limited this branch to 10 miles, leaving it 1.7 miles short of the Alexandria and Fredericksburg Railroad. This split from the existing line at Brooke and ran north to Quantico, also on the Potomac. The old line to the Aquia Creek wharf was abandoned on the opening of the Quantico wharf on May 1, 1872. On the other end of the line, the Alexandria and Washington Railroad was chartered on February 27, 1854, to build from the south end of the Long Bridge over the Potomac River south to Alexandria. That line opened in 1857. The railroad went bankrupt and was sold July 9, 1887, being reorganized November 23,