HNTB provided bridge inspection, on-call engineering, load rating and construction engineering services to CDOT for the 379 structures in the City of Chicago.

Specific services included the routine, fracture critical, underwater, element level, mechanical-electrical, and special feature inspections of the 379 bridges that comprise the city’s bridge infrastructure. This included three sets of routine inspections of all 379 structures, fracture critical inspections on more than 100 structures and on-call engineering peer review of complex bridge designs.

HNTB staff’s extensive knowledge of complex bridge designs provided CDOT with a valuable resource through value engineering and/or peer review services for the design of important Chicago bridges, including the Canal Viaduct, 35th Street, 41st Street and 43rd Street pedestrian bridges over Lake Shore Drive and Metra.

  • Three separate sets of routine inspections on all 379 structures in the City of Chicago
  • Fracture critical inspections on more than 100 city structures in locations critical for local transportation
  • Engineering design expertise allowed for design services for the reconstruction of or repair to more than 30 bridges
  • Inspected biannually all 43 City-owned movable bridges and designed repair and rehabilitation, performing as needed services for many of them.

Location: Chicago, IL

Client: Chicago Department of Transportation