CTA Adjusts Route 4 for Cottage Grove Work
CTA reroutes northbound Route 4 and 115 buses via King Drive for Cottage Grove construction
CTA Reroutes Bus Route 4 for Construction
Chicago's CTA will detour northbound buses on Route 4 Cottage Grove and Route 115 Pullman/115th starting Tuesday, April 7, transit officials said. The temporary reroute affects northbound service only, with southbound buses continuing normal operations. Officials haven't announced when the detour will end, though they said it's tied to construction work on Cottage Grove between 107th and 111th streets.
Construction Prompts Service Adjustment
The reroute is necessary due to construction work on Cottage Grove between 107th and 111th streets, according to the transit agency. Officials said the work requires closing portions of the roadway to bus traffic, making the detour unavoidable. The CTA typically implements temporary reroutes when street construction blocks normal bus paths, with detours designed to minimize added travel time. Specific details about the construction project's scope and contractor weren't available by publication time.
Detour Route Details
Northbound buses will be detoured via King Drive and 107th Street before resuming their normal route on Cottage Grove, officials confirmed. The detour begins at 6:00 AM on Tuesday, April 7, 2026. Southbound buses will continue to operate normally without any changes to their route. Officials advised passengers to allow extra travel time when using these affected routes, though they didn't specify how much additional time riders should expect.
Duration Remains Unclear
The end date for this temporary reroute hasn't been determined, transit officials said. The agency typically ties construction-related detours to project completion timelines, but officials didn't provide an estimated duration for the Cottage Grove work. The CTA said it'll announce the detour's end date once construction schedules are finalized. Riders should expect the reroute to remain in effect until further notice.
System-Wide Service Updates
The Route 4 detour is among multiple service adjustments currently affecting CTA operations. The Brown Line has planned work with some stations being bypassed, while the Purple Line and Yellow Line have added service, officials said. Multiple bus routes across the system currently have active alerts. Riders can check Moovit for real-time updates on Route 4 and other CTA services, including current detour information and estimated arrival times during the construction period.
