Chicago Route 66 Detours for Viaduct Repairs

CTA Route 66 detours around Chicago Avenue viaduct construction starting September 29

CTA Route 66 Detours for Viaduct Work

Chicago's Route 66 bus will detour around construction starting Monday, September 29, at 9 AM, transit officials said. The Chicago Transit Authority announced the temporary reroute affects eastbound and westbound service due to Chicago Department of Transportation work on the Chicago Avenue viaduct. Officials haven't said when the detour will end, listing the completion date as to be determined.

Construction Requires Street Closures

The viaduct work requires closing portions of Chicago Avenue, forcing buses onto alternate streets, according to the transit agency. CDOT construction projects on aging infrastructure typically involve structural repairs, resurfacing, or safety improvements. Officials didn't specify what type of work is being performed on the viaduct or provide cost estimates for the project. Transit agencies coordinate with city transportation departments to minimize service disruptions during infrastructure projects.

Buses Follow New Street Routes

Eastbound Route 66 buses will operate via Chicago, Milwaukee, Grand, and Orleans before resuming their normal route on Chicago Avenue, the CTA said. Westbound buses will travel via Chicago, Wells, and Grand before returning to their regular route on Milwaukee Avenue. The detours add several turns to the route, though officials didn't say how much additional travel time riders should expect. Passengers are advised to allow extra time during the construction period.

No Timeline Set for Route Restoration

The CTA listed the end date for the service change as to be determined, with no estimated completion timeline provided. Transit officials said the reroute will remain in effect until CDOT completes its viaduct work. The agency typically announces service restorations several days before routes return to normal, though officials haven't said whether they'll provide advance notice for this change.

Riders Can Track Detour Updates

Route 66 riders should plan for modified service and potential delays while the detour remains in effect. The reroute affects service along a key corridor connecting downtown Chicago with northwest neighborhoods. Moovit provides real-time bus tracking and route updates for CTA services, helping riders navigate temporary detours and plan trips during construction periods.