DB Sterlin’s structural department has experience in bridge design and inspection services for federal, state, and local transportation agencies as well as permit review services for the City of Chicago, Department of Buildings.
Our design team has experience with highway, railroad transit and pedestrian bridges, retaining walls, culverts, and earth retention systems design. Using the latest analysis software, codes and standards, DB Sterlin engineers have experience with materials ranging from reinforced concrete, pre-stressed and post-tensioned concrete, to steel and timber.
Our field inspection teams conduct detailed, hands-on structural inspections to document the condition of bridges, buildings, transportation facilities, and ancillary traffic structures in the State of Illinois. Our registered structural and professional engineers are experienced, hands-on field and office professionals that you can count on and have extensive experience in inspection of all major components of a bridge including foundation, substructure, deck and superstructure. They are familiar with the Department of Transportation bridge inspection requirements and have passed the National Highway Institute Safety Inspection of In-Service Bridges course. Among other skills, our engineers are trained to evaluate a variety of bridges and structures to determine the critical areas for inspection, including fatigue-prone details and common points of deterioration and distress. In addition, they are proficient in generating inspection schedules, coordinating required access equipment and MOT, railroad access permits, and report preparation.
DB Sterlin’s bridge design and inspection services include:
Highway, Railroad and Pedestrian Bridge Design 
Structural Inspection and Assessment including Load Rating and Fatigue Analysis
Retaining Wall Design
Specialty Structures (related to transportation projects)
Preliminary Type and Size Studies
Technical Specifications
Opinion of Probable Costs
Building Inspection and Code Compliance
Design and/or Rehabilitation Services
Earth Retention Systems Design