Chicago Department of Transportation
The Chicago Department of Transportation is an executive department of the City of Chicago responsible for the safety, environmental sustainability, maintenance, and aesthetics of the surface transportation networks and public ways within the city. This includes the planning, design, construction, and management of streets, sidewalks, bridges, and alleys.
CDOT is headed by the Commissioner of Transportation, an appointee and cabinet member of the Mayor of Chicago. The second in command at CDOT is the First Deputy Commissioner, who serves as a liaison between the Commissioner's office and the various operational sections. Managing Deputy Commissioners may also be placed by the Commissioner for assistance in policy and operational oversight.
CDOT is organized into several Divisions each headed by a Deputy Commissioner, including the Divisions of Administration, Project Development, Engineering, In-House Construction, Electrical Operations, Sign Management, Traffic Safety, and Infrastructure Management.
History
CDOT was established by order of the Chicago City Council on 11 December 1991 when Mayor Richard M. Daley restructured the Chicago Department of Public Works into the new Chicago Department of Transportation. The restructuring took effect on 1 January 1992. John N. LaPlante, who was appointed as Acting Commissioner of Public Works in September 1991, continued as the first Acting Commissioner of CDOT.In 2011, the Chicago Department of Environment was disbanded and absorbed by other city departments including General Services, Public Health, Family and Support Services, and Water Management. The Department of Transportation took over Environment's Clean Vehicles Initiative.
Department of Public Works
Prior to the 1991 reorganization, the responsibilities of the Department of Transportation belonged to the Chicago Department of Public Works. The Department of Public Works was first recognized as a branch of the city administration in 1861, at which point it consolidated the services of water, sewerage, parks, streets, river and harbor, and public buildings. Initially, the department was headed by an elective board of public works. In 1867, the board became appointive, and in 1876, the board was completely abolished in favor of a single commissioner. Mayor Heath served as the first temporary head of the department until a commissioner was provided in May, 1879. The office of deputy-commissioner was created in 1892. At the time of creation, the position was at the appointment of the mayor, which created a confusing line of responsibility for the heads of the department.After the abolishment of the three-man board in 1876, the department was composed of the bureaus of water, sewerage, streets, special assessment, engineering, and maps.
List of commissioners
Since the Department's inception in 1991, the position of Commissioner of Transportation has been filled fourteen times by thirteen individuals, including five official "Acting Commissioners".| # | Name | Appointment | Departure | Notes |
| 1 | John N. LaPlante | 2 Sep 1991 | 14 Apr 1992 | Acting |
| 2 | Joseph F. Boyle | 20 May 1992 | 1995 | |
| 3 | Thomas K. Walker | 2 Oct 1995 | 1999 | |
| 4 | Judith C. Rice | 3 Nov 1999 | 2000 | |
| 5 | Miguel A. d'Escoto | 2001 | 16 Jun 2005 | |
| 6 | Cherilyn H. Heramb | 2005 | 2007 | Acting |
| 7 | Thomas G. Byrne | 2007 | 2009 | |
| 8 | Thomas Powers | 2009 | 2010 | Acting |
| 9 | Bobby L. Ware | 14 May 2010 | 2011 | |
| 10 | Gabe Klein | 18 May 2011 | 30 Nov 2013 | |
| 11 | Rebekah Scheinfeld | 31 Dec 2013 | 20 May 2019 | |
| 12 | Thomas R. Carney | 21 May 2019 | 10 Dec 2019 | Acting |
| 13 | Gia Biagi | 10 Dec 2019 | 11 Aug 2023 | - |
| 14 | Thomas R. Carney | 22 Dec 2023 | 3 Jul 2025 | Acting from Aug. to Dec. 2023 |
| 15 | Craig Turner | 4 Jul 2025 | Present | Acting |
Scandals
1992 Chicago Flood
On April 13, 1992, a damaged utility tunnel wall beneath the Chicago River opened into a breach which flooded basements and underground facilities throughout the Chicago Loop with an estimated of water.Investigation into the incident revealed that the tunnel damage was a result of new pilings installed near the Kinzie Street Bridge, which created a slow leak that had been discovered in January of that year. Citing a lack of immediate response to the issue, Mayor Richard M. Daley requested Acting Commissioner John N. LaPlante for a letter of resignation after the tunnel was patched and the flood contained.
Upon LaPlante's resignation, Gery J. Chico, Mayor Daley's Deputy Chief of Staff, took control of the Department of Transportation eventually handing the reins to a newly appointed Commissioner, Joseph Boyle.