CTA Reroutes South Side Buses Around Police Activity

CTA reroutes #79 and #4 bus lines on South Side due to police activity at 79th and Cottage Grove

2026-04-23, Moovit News Team

CTA Reroutes Two South Side Bus Routes

Two Chicago Transit Authority bus routes serving the South Side are temporarily rerouted due to police activity near 79th Street and Cottage Grove Avenue, transit officials said. The #79 79th and #4 Cottage Grove routes are affected, with detours currently in effect. The CTA hasn't said when normal service will resume, classifying the disruption as causing minor delays.

Police Activity Prompts Service Changes

The reroutes stem from ongoing police activity at the 79th Street and Cottage Grove intersection, according to the transit agency. Officials issued a customer alert advising riders to allow extra travel time while the detours remain in place. The CTA didn't provide details about the nature of the police activity or how long the situation might last. Transit agencies typically implement temporary reroutes when public safety incidents block normal bus paths, though the duration varies depending on circumstances.
CTA bus at 79th Street and Cottage Grove intersection on Chicago's South Side

Detailed Detour Routes for Affected Lines

Eastbound #79 79th buses will operate via 79th Street, King Drive, 76th Street, Greenwood Avenue, and 79th Street before returning to the normal route. Westbound #79 buses will travel via 79th Street, Greenwood Avenue, 76th Street, Cottage Grove Avenue, and 79th Street. Northbound #4 Cottage Grove buses are rerouted via Cottage Grove Avenue, 83rd Street, King Drive, 76th Street, and Cottage Grove Avenue before resuming normal routing. Southbound #4 Cottage Grove buses aren't affected by the reroute and continue operating on their regular path.

Timeline Remains Uncertain

The CTA hasn't announced when buses will return to normal routes, with the end date listed as to be determined. Officials said the reroutes will remain in effect until police activity concludes in the area. The agency typically updates service alerts as situations develop, though specific timing wasn't provided for when riders can expect additional information.
Chicago Transit Authority bus navigating detour route on South Side street

What Riders Need to Know

Passengers using the #79 79th or northbound #4 Cottage Grove routes should plan for longer travel times and different stop locations while detours are active. Southbound #4 riders can expect normal service. The CTA advised riders to allow extra time for their trips due to the temporary changes. Moovit provides real-time updates on CTA bus locations and route changes to help riders navigate service disruptions.