Oxford Road 45 Bridge

Inspection and Evaluation

Oxford County, Ontario

The Oxford Rd 45 Bridge was originally constructed in 1971 and spans over the Thames River on Oxford Road 45. It is a two-span continuous slab on a precast concrete girder structure. The total span is 48.8m. Doug Dixon and Associates Inc. (DDA) was retained by Oxford County to undertake a detailed field investigation, including a detailed deck condition survey, underwater diving inspection and an evaluation of this bridge. Based on the evaluation and inspection, recommendations for rehabilitation were developed. A life cycle cost analysis was completed to compare the alternatives and a final recommendation was provided. The recommended solution was to complete a deck replacement with a semi-integral abutment conversion. DDA designed the new deck system complete with asphalt and waterproofing. Modifications to the existing abutments were also designed to enable the semi-integral conversion and the bearing seat was modified to accommodate the road profile. Repairs to the girder ends, including a galvanic corrosion protection system were also recommended to further extend the life of the girders. Following the rehabilitation of the structure, it is anticipated that Oxford County will gain another 75 years of life from the bridge. DDA completed Preliminary Design, Detailed Design, Contract Preparation and Tendering Assistance for the County of Oxford. DDA will also provide Engineering Assistance during construction. The project is currently in Construction with anticipated completion in October 2023.