Wacker Drive Viaduct Reconstruction

  • Wacker Drive Viaduct Reconstruction
  • Wacker Drive Viaduct Reconstruction
  • Wacker Drive Viaduct Reconstruction
  • Wacker Drive Viaduct Reconstruction


Client: Chicago Department of Transportation

Location: Chicago, IL


The City of Chicago Department of Transportation reconstructed the Wacker Drive Viaduct from Randolph to Congress. The deteriorated viaduct structure built in the 1950s was fully replaced, lifting the vertical clearance by more than one foot. New lighting provides improved visibility and new ventilation equipment is providing improved air quality. The service drives and through lanes were separated, alleviating congestion and expediting traffic. Utilities were relocated throughout the viaduct and major adjacent bridges were rehabilitated.

Services Provided

d’Escoto, Inc. provided Construction Engineering and Inspection services for the viaduct reconstruction from the Randolph Street to Monroe Street portion of the project. This portion was approximately 1,400 feet long by 130 feet high. d’Escoto also provided coordination and inspection of the utility relocations and new ventilation equipment on lower Wacker Drive.

d’Escoto, Inc.’s role included, but was not limited to, the following:

  • Review and documentation of existing site conditions
  • Coordination of fieldwork between specialty contractors
  • Measurement, calculations, and documentation of line item quantities through inspector daily reports
  • Daily, weekly and monthly progress reporting to the Program Management office
  • Updating of the field construction set with as-built conditions
  • Providing general safety reviews to ensure the implementation of all applicable regulations
  • Reviews and recommendations for all contractor pay requests
  • Participation in progress meetings with the Owner, Designer/Engineers, Contractor, Program Manager and Construction Manager