CTA Reroutes Bus 4 Around Construction Work

CTA reroutes Bus Route 4 and 115 northbound via King Drive starting April 7, 2026

CTA Reroutes Bus Route 4 for Construction

Chicago's Bus Route 4 Cottage Grove will detour around construction starting Tuesday, April 7, 2026, at 6:00 AM, the Chicago Transit Authority announced. The temporary reroute also affects Route 115 Pullman/115th, with northbound buses taking King Drive and 107th Street before returning to Cottage Grove. Officials haven't determined when the reroute will end.

Construction Prompts Service Change

The reroute is necessary due to construction work on Cottage Grove between 107th and 111th Streets, transit officials said. The CTA typically implements temporary detours when roadwork blocks regular bus routes, ensuring service continues while infrastructure improvements proceed. Southbound buses on both routes will continue operating normally without changes. Officials didn't provide details about the construction project's scope or contractor.

Northbound Riders Face Detour

Northbound buses on routes 4 and 115 will be detoured via King Drive and 107th Street before resuming their normal route on Cottage Grove, according to the transit agency. Southbound service remains unchanged on both routes. Passengers are advised to allow extra travel time when using these affected routes. Officials didn't specify how much additional time riders should expect or how many stops will be temporarily relocated during the detour.

Implementation Begins Tuesday Morning

The service change takes effect Tuesday, April 7, 2026, at 6:00 AM, the CTA confirmed. The end date for this temporary reroute hasn't been determined, officials said. Transit agencies typically tie construction-related detours to project completion timelines, but the CTA didn't provide an estimated duration for the Cottage Grove work. Officials said riders should check for updates as the construction progresses.

Riders Urged to Plan Ahead

Passengers using routes 4 and 115 should plan for the detour when traveling northbound through the affected area, transit officials said. The CTA advised riders to allow extra travel time during the construction period. Moovit provides real-time updates for CTA routes, helping riders navigate service changes and plan trips around temporary detours.