For informational/historical purposes only.

Ohio Department of Transportation

Internet Media Advisory

Understanding Ohios Bridge Inspection and Preservation Program

COLUMBUS (August 2, 2007) The Ohio Department of Transportation joins the nation in monitoring the recovery and investigative efforts in Minneapolis, Minnesota. Our sympathies go out to the families impacted by this tragic event. As we wait to hear from the National Transportation Safety Board on what may have caused this catastrophic failure of the I-35W bridge structure, here is some background information on Ohios Bridge Inspection and Preservation Program.

  • ODOT has an aggressive bridge inspection program and devotes a significant amount of its annual budget to bridge preservation.

  • Ohio has over 42,000 bridges, the second largest number of bridges in the country. ODOT is responsible for 14,891 bridges on the state highway system.

  • Federal regulations require that every bridge be inspected once every two years. However, Ohio law requires all bridges to be inspected on an annual basis. This applies to the Departments bridges as well as county and city bridges.

  • Bridges are inspected by trained inspectors or consultants. These trained inspectors look at several key appraisal factors, including the bridge deck, the superstructure, and the piers and abutments that support the bridge.

  • ODOT has $239 million budgeted in 2008 to the repair, replacement, and maintenance of Ohio bridges under ODOTs authority. We also have devoted $91 million to assist Ohios Counties and Cities on their bridge projects.


  • The engineering of the I-35W Bridge was an under-deck truss support. ODOT has inspection responsibility for 12 similar under-deck truss bridges in the state. There are 181 deck trusses statewide.

  • Of particular interest are the 6 under-deck trusses on the interstate system. All of these bridges have been inspected within the last year.

  •  Three of these bridges are in Southwest Ohio:

    •  I-471 in Hamilton County
    •  I-71 in Warren County near Mason/Kings Island
      (two separate bridges in each direction) - replacement is in design
  • Three are in the Cleveland area:
    •  I-90 Innerbelt Bridge in Cuyahoga County
    •  I-90 in Lake County
      (two separate bridges in each direction) - under construction to be replaced