Ardmore Roderick assisted with Phase I/II engineering services for the Chicago Department of Transportation’s South Water Street Viaduct Project. This project was processed as a Categorical Exclusion I and consisted of reconstruction of the intermediate level bridge over Lower South Water Street from Beaubien Court to Stetson Avenue. Support columns for the two Illinois Center buildings pass through the median of both the lower and intermediate levels of South Water Street requiring extensive consideration throughout the design of the project. Various utilities were attached to the underside of the structure.

Ardmore Roderick provided general engineering services, including traffic counts, roadway geometrics, pedestrian/ADA requirements, and preliminary design. Highlights of the ADA improvements included the addition of bump-outs on Lower South Water Street. Vertical clearance improvements were achieved by slightly lowering a portion of the Lower South Water Street profile. Ardmore Roderick assisted in the preparation of the Environmental Survey Requests (ESR) and Project Development Reports (PDR). Our personnel gathered names and contact information and prepared initial contact letters to be distributed to those businesses potentially affected by the reconstruction project. Ardmore Roderick prepared various exhibits, including those related to crash analysis, roadway plan and profiles, maintenance of traffic, as well as detour routes. Our team also assisted in the preparation of the cost estimate and technical writing for various sections of the report. Ardmore Roderick’s phase II general engineering support services included the following:

• Preparation of proposed drainage and utility plans
• Proposed pavement marking and signing plans
• Preparation of Maintenance of Traffic plans
• Assistance with preparing special provisions and details
• Quantity calculations
• Preparation of schedule of quantities