Service on the CTA Yellow Line could be suspended for several days after ground gave way near the tracks late Sunday due to a nearby construction project, Skokie officials said.
The problem was first discovered Sunday night by ComEd crews looking into a power outage in the area, according to the Village of Skokie.
"Due to the movement of earth in the vicinity of the CTA yellow line and the CTA viaduct across McCormick Blvd., both were shutdown as a precaution," a spokeswoman for the Metropolitan Water Reclamation District of Greater Chicago said in a statement.
The construction project that caused the track problems is not being run by the CTA, CTA spokesman Steve Mayberry said.
Officials with MWRD said the construction is for "the disinfection project at the O'Brien water reclamation plant and the ground collapse occured when an "open cut retention system conduit was compromised." The exact cause of the collapse is not known and an investigation is underway, officials said.
The Yellow Line, which runs between Chicago and Skokie, was suspended and will likely be stopped for several days, according to village officials. CTA spokesman Steve Mayberry, however, said there is no timetable for restoring train service.
McCormick Boulevard was also closed between Oaktown and Howard streets until 1 p.m., the village said.
The CTA website reports shuttle buses are in place for the affected area and commuters can also take the No. 97 Skokie bus.
CTA officials said there were 2,900 daily riders on the Yellow Line last year.