The Chicago Data Portal has a shapefile for Bike Routes:
https://data.cityofchicago.org/Transportation/Bike-Routes/3w5d-sru8
IDOT may have a more comprehensive shapefile that would be able to distinguish between protected bike lanes and shared ones.
It may be of interest to connect and look for correlations with other sources like Bike Lane Uprising and their obstruction heat maps:
https://www.bikelaneuprising.com/mapped-obstructions
The Chicago Data Portal has a shapefile for Bike Routes:
https://data.cityofchicago.org/Transportation/Bike-Routes/3w5d-sru8
IDOT may have a more comprehensive shapefile that would be able to distinguish between protected bike lanes and shared ones.
It may be of interest to connect and look for correlations with other sources like Bike Lane Uprising and their obstruction heat maps:
https://www.bikelaneuprising.com/mapped-obstructions