CHICAGO (CBS) — Red Line service has resumed as normal on the South Side, after damage to a third rail prompted major delays late Tuesday morning.

CTA crews discovered a defect on the third rail powering northbound Red Line trains near 47th Street shortly before 10 a.m.

The CTA briefly shut down all Red Line trains south of 35th Street, but later allowed trains to operate on a single track between Sox/35th and Garfield while workers repaired the damage.

cta rail Normal Red Line Service Resumes After Damaged Third Rail Caused Delays

CTA workers repair a defect on the third rail powering Red Line trains near 47th Street on Dec. 19, 2017. The damage forced trains to operate on a single track between 35th and Garfield while workers made repairs. (Credit: CBS)

Trains in both directions stopped on the southbound side of the 47th Street platform while crews were fixing the third rail.

Normal service resumed around noon after the CTA completed repairs. The CTA said riders should expect residual delays while trains resume service on both tracks.

Riders can monitor wait times on the Red Line using the CTA Train Tracker website.

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