William G. Stratton Building
401 S. Spring St.
Third Floor, Stratton Bldg
Springfield, IL 62706
Directions for SpringfieldDirections for Springfield
PH: 217/782-2864
TDD: 217/524-4449
FAX: 217/524-0565

James R. Thompson Center
14th Floor
100 West Randolph Street
Chicago, IL 60601
Directions for ChicagoDirections for Chicago
PH: 312/814-6000
FAX: 312/814-2041


Dunn-Richmond
Economic Development Center
Room #258
150 Pleasant Hill Road
Carbondale, IL 62901
Directions for CarbondaleDirections for Carbondale
PH: 618/453-8232
FAX: 618/453-8233

Ottawa Satellite Office
2nd Floor IDOT Dist # 3 Hdqtrs
700 E. Norris Drive
Ottawa, IL 61350
Directions for Ottawa
Steve Halm
PH: 815/433-7120
Kim Tracy
PH: 815/433-7121
FAX: 815/433-7123