List of common carrier freight railroads in the United ...
About 700 railroads operate common carrier freight service in the United States. There are about 160,141 mi (257,722 km) of railroad track in the United States, nearly all standard gauge.. Reporting marks are listed in parentheses.. A&R Terminal Railroad (ART); Aberdeen and Rockfish Railroad (AR); Aberdeen, Carolina and Western Railway (ACWR); Acadiana Railway (AKDN)