The Lake Ontario, Auburn and New York Railroad, chartered in 1852, had graded a line between Fair Haven and Auburn, New York, but ran out of money without ever laying track. The new Southern Central Railroad was chartered on September 6, 1865, to complete this work and build a line from Fair Haven due south to Owego, New York, where it could interchange traffic with the Erie Railroad. The railroad opened between Owego and Auburn on March 8, 1870. The Erie was at that time still a broad gauge railroad, which made interchange with the standard gauge Southern Central difficult. With financial assistance from the Lehigh Valley Railroad, the Southern Central built south from Owego toward the state line at Athens, Pennsylvania, and an interchange with the Pennsylvania and New York Railroad, a Lehigh Valley Railroad company. This extension opened on January 3, 1871. The northern part of the line to Fair Haven finally opened on December 1, 1871. Financial problems led to the Lehigh Valley leasing the company in 1887. The debts were such that in 1895 the Lehigh Valley formed a subsidiary, the Lehigh and New York Railroad, to buy the Southern Central in a foreclosure sale; after which the Lehigh Valley leased the Lehigh and New York. The latter company was merged into the Lehigh Valley at the end of 1949. Under the Lehigh Valley the line was known first as the Lehigh and New York Branch, then later as the Auburn Branch.
the Freeville Secondary, from Freeville south to Owego
The remaining Auburn Branch between Sayre and Owego was not included in Conrail, given the parallel Erie Lackawanna Railwaymain line, and abandoned after April 1, 1976.
Owego-Harford
Although the New York Department of Transportation spent $832,000 to rehabilitate the line north of Owego, neither of the two secondary tracks was included in Conrail. Additional subsidies from the state of New York led to Conrail operation of the entire Sayre–Mead line, although the line was abandoned north of Locke, New York, after August 31, 1976. Ownership remained with the bankrupt Lehigh Valley Railroad. In April 1978 the Lehigh Valley further abandoned the portion between Locke and Dryden, New York. A final abandonment in 1979 removed the line between Dryden and Harford Mills, New York. On January 1, 1980, the Delaware and Hudson Railroad replaced Conrail as the operator of the line north of Owego. In 1981 the Tioga County Industrial Development Agency acquired the line from the trustees of the Lehigh Valley Railroad, then leased it back to the D&H. The D&H terminated the lease in 1985 after the close of the Arco Petroleum Products storage facility in Harford Mills. The Tioga Central Railroad operated both freight and excursion serviceon the line from 1986–1992, when the IDA replaced them with the Owego and Harford Railway, which continues to operate the line today.