The Chicago Rail Link (reporting mark CRL) is a shortline switching railroad in Illinois.

[3] In late 2018, Senators Dick Durbin and Tammy Duckworth announced that the Chicago Rail Link will receive $1.6 million in funding from the United States Department of Transportation to implement positive train control.

Automatic block signalling was installed in the 1910s; however, upon Chicago Rail Link ownership, the line was downgraded to be unsignaled and single-tracked.

[7] This subdivision was used by Baltimore & Ohio Railroad for passenger trains crossing the Rock Island main line at Gresham Junction.

There was a former extension of the line that went almost one half of a mile further, which intersected the main branch of the current day Metra Rock Island District.