The Federal Railroad Administration (FRA) data displays Class I railroads in the United States.

This Federal Railroad Administration (FRA) map service displays Class I railroads in the United States. Classification is defined by the annual gross revenue of a given organization. Class I railroads are the largest. According to the federal Surface Transportation Board (STB):

Class I railroads are regulated by the STB and subject to the Uniform System of Accounts (49CFR1201). These carriers are also required to file annual and periodic financial and statistical reports. Railroads are classified based on their annual operating revenues. The Class to which a carrier belongs is determined by comparing its adjusted operating revenues for three consecutive years to the following scale:

Class III - $250 million or more

Class III - $20 million or more

Class III - $0 to $20 million

The seven Class I railroads portrayed in this map service are:

BNSF Railway (BNSF)

Canadian National Railway (CN)

CSX Transportation (CSXT)

Canadian Pacific Railway (CPRS)

Kansas City Southern Railway (KCS)

Norfolk Southern Railway (NS)

Union Pacific Railroad (UP)

To learn more: Federal Railroad Administration

Data currency: Current FRA service

Data downloaded from https://hub.arcgis.com/maps/b36b01e28e114e7d921278b4d026b4be/explore