CTA Route 66 Detours for Viaduct Work

CTA Route 66 detours around Chicago Avenue viaduct construction starting Monday

CTA Reroutes Route 66 for Viaduct Work

Chicago Transit Authority's route 66 will detour around construction starting Monday, September 29, at 9 a.m., officials said. The temporary reroute affects both eastbound and westbound buses along Chicago Avenue due to viaduct work by the Chicago Department of Transportation. Officials haven't announced when the detour will end.

Construction Prompts Service Changes

The Chicago Department of Transportation is conducting construction work on the Chicago Avenue viaduct, requiring the temporary route modification. Transit agencies typically implement detours when infrastructure projects affect regular bus paths, ensuring service continuity while maintaining rider safety. The CTA coordinates with CDOT on construction-related service changes throughout the year. Officials said the reroute will remain in effect until viaduct work is completed, though a specific timeline wasn't provided.

Detour Routes Outlined for Riders

Eastbound route 66 buses will travel via Chicago, Milwaukee, Grand, and Orleans before resuming their normal route on Chicago Avenue. Westbound buses will operate via Chicago, Wells, and Grand before returning to their regular route on Milwaukee Avenue. The detour adds several turns to the standard route pattern. Officials advised passengers to allow extra travel time due to the changes, though specific delay estimates weren't provided.

Changes Take Effect Monday Morning

The reroute takes effect Monday, September 29, 2025, at 9 a.m., according to the transit agency. Officials said the timing allows the construction work to proceed while maintaining bus service in the area. The CTA typically announces service changes several days in advance to give riders time to plan alternative routes or adjust their schedules.

Real-Time Updates Available

Riders should expect longer travel times on route 66 during the detour period. The CTA said passengers can check real-time bus locations and arrival predictions, though officials didn't specify whether additional buses will be deployed to offset potential delays. Moovit provides real-time updates and alternative route planning for CTA services throughout Chicago, helping riders navigate temporary service changes.