But commuters were experiencing delays of up to an hour and a half. The freight train had been blocking tracks for both lines.
The Joliet yard is a major Metra hub.
Metra tells ABC7 that Rock Island trains coming out of Blue Island, however, have their own yard and were operating normally.
For more updates, visit www.metrarail.com.
(Source: Sun-Times Media Wire - Copyright Chicago Sun-Times 2012.)