The Bridge Department inspects, evaluates, designs, maintains, repairs and constructs the more than 700 bridges in District Three.  There are currently three Repair/Construction Crews and three Bridge Inspection Crews.  The office staff consists of a Bridge Engineer, who is assisted by a Repair/Design Engineer, an Evaluation Engineer, two Staff Engineers, an Engineering Technician, a Secretary, and an Office Assistant.

District Three is home to several large bridges across the Ohio River.  This includes the I-77 Williamstown-Marietta, Ohio River Bridge, which is North America's largest Pennsylvania Petit Truss.  The William S. Ritchie, Jr. in Ravenswood, the Hi Carpenter Memorial in St. Marys and the Parkersburg - Belpre Bridges, which are the 18th, 19th, and 37th largest Cantilever Trusses in North America, respectively.  The WV 31 Williamstown - Marietta Ohio River Bridge is the 28th largest Continuous Truss in North America.  District Three has 326 concrete, 62 steel truss, 303 steel beam, 11 timber and 16 other type of bridges.

The Inspection Crews normally inspect the bridges on a two-year cycle, with interim inspections performed as needed.  The inspection information is used by the Evaluation Office to analyze/evaluate the bridges and compile this information into bridge inspection reports.  The Bridge Engineer reviews and approves the reports and uses them to prioritize repairs and replacement of the District's bridges.  The bridge inspection reports are also forwarded to Central Office in Charleston for their review and project prioritization.

The Design Office is responsible for developing plans for the Repair Crews to repair or replace bridges.  They also develop contract bridge plans for private contractors to bid and construct.  Since 1987, 160 structures have been constructed by State and Private forces in District Three.  They consist of 117 concrete, 9 timber, 27 steel beam, 3 steel truss and 4 other types of Bridges.