Chicago CTA Adapts Route 91 to Keep West Side Moving

CTA Route 91 southbound buses detour via Austin, Lake, Humphrey streets starting Feb 18

CTA Route 91 Detour Starts Feb 18 in Chicago

Southbound Route 91 buses will follow a detour starting Feb. 18, affecting riders on Chicago's West Side. The Chicago Transit Authority said buses will divert from their regular path, though officials didn't specify how long the detour will last. The change affects one of the area's key north-south bus connections.

Why the Detour Is Happening

Transit officials didn't provide details about what's prompting the route change. The CTA typically implements detours for street construction, utility work, or special events, but specific reasons for this modification weren't available by publication time. The agency classified the alert as high-severity, indicating a significant change to the regular service pattern that riders should plan around.

Detour Path and Affected Streets

Southbound Route 91 buses will divert via Austin, Lake, Humphrey, and South Boulevard before resuming the normal route on Austin, according to the transit agency. The detour affects the middle portion of the route, though officials didn't say which specific stops will be temporarily relocated or skipped. Riders who board at stops along the regular path should check whether their stop remains in service during the detour period. The CTA didn't release information about how much additional travel time the detour might add.

When Changes Take Effect

The detour begins Feb. 18, 2026, transit officials confirmed. The agency didn't announce an end date for the modified routing, and it's unclear whether this is a short-term change or a longer-term adjustment. The CTA typically provides advance notice of detours, though details about how long riders received notice before this change weren't available.

What Riders Need to Know

Passengers who regularly use southbound Route 91 should allow extra travel time and verify their stop locations during the detour period. The CTA recommends checking for updates before traveling. Moovit provides real-time bus locations and service alerts for CTA routes, helping riders track Route 91 buses and plan trips around the detour.