121 - Union/Streeterville Express
We do not have a detailed description for this route.
For more information, visit https://www.transitchicago.com/bus/121/.
Current Service Alerts
Earlier Morning/Later Evening Service and Improved Frequency
How does this affect my trip?
Earlier morning AM service (NB trips only) on the #120 and #121 buses and later evening PM service (SB trips only) on the #120 and #121 begins Mon, Dec 23.
Northbound morning service will depart approximately 45 minutes earlier.
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Earlier Morning AM Service (northbound trips only): |
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Southbound evening service will depart approximately 20 minutes later.
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Later PM Evening Service (southbound trips only): |
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Service frequency on both routes will operate every 7-15 minutes during the peak rush periods.
Why is service being changed?
Weekday service is being changed to match expected demand and ridership patterns.
Temporary Bus Stop Change
How does this affect my trip?
Buses will no longer board on Jackson west of Canal (Stop 
) . Instead, customers can board buses in the Union Station Transit Center, just south of the current stop, adjacent to #28 Stony Island buses (Stop 
).
Why is service being changed?
Service is affected due to an ongoing construction project in the area.
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Mobility Bot utilizes data provided by Transitland.
CTA data provided by Chicago Transit Authority.