St. Charles Air Line

St. Charles Air Line
Amtrak's Saluki traverses the Air Line in 2010.
Overview
OwnerBNSF, UP, CN
LocaleChicago
History
Opened1856
Technical
Track gauge4 ft 8+12 in (1,435 mm) standard gauge
Route map

Metra Joliet Sub District for RI

The St. Charles Air Line is a rail line in Chicago, Illinois, partially owned by the BNSF Railway, Union Pacific Railroad (UP), and Canadian National Railway (CN).

It is currently used by the Canadian National Railway for freight trains and by Amtrak passenger trains. The line runs east from south of Union Station to a junction with Canadian National Railway at 16th Street interlocking (the CN line then continues towards the shore of Lake Michigan, where it turns south under McCormick Place, passing over and then paralleling the Metra Electric Line).