The Rock Island line runs via Blue Island, Illinois to LaSalle Street Station (track owned by Metra), while the Metra Heritage Corridor line runs via Summit, Illinois to Chicago's Union Station (track owned by Canadian National). The Blue Island trains leave from a single track on the south side of the station, while four tracks on the east side serve Amtrak, Metra Heritage, BNSF freight, and Union Pacific freight trains (BNSF owns the western two tracks, while UP owns the eastern two). CSX takes over ownership of the Rock Island tracks just west of the station, with trackage rights from the Iowa Interstate Railroad.