TRUCK WEIGHT EFFECTS ON BRIDGE COSTS. FINAL REPORT

States are facing strong pressure to allow heavier truck weights. Such increases in weight place a heavy burden on the bridge system which already suffers many structural deficiencies. Ohio is considering increases in weight through a permit system which would allow the collection of funds to maintain the safety and service life of the existing bridge system. This study has examined the statistics of both the Ohio State and non-State owned bridges under a very large variety of possible changes in truck weight regulations. Bridge cost models have been derived to cover new bridge construction, rehabilitation of capacities of existing bridges and reduced service life due to fatigue. For each portion of the bridge cost, the entire population of Ohio's bridges have been surveyed. Current legal ratings have been analyzed and expected changes due to weight law scenarios have been computed using simple span and continuous span bridge behavior analyses for bending moments. For each weight scenario, the overall required AASHTO HS design level required was assessed along with added construction cost. Further, the number of bridges that will need to be strengthened along with these costs was determined. Finally, a fatigue cost was estimated to be assessed for each crossing of a bridge by either a truck using a new weight regulation or falling into the superload class. Total bridge costs are computed for several hundreds of permit weight types and combined for both State and non-State bridges. The report also discusses the effects of heavier trucks on bridge design practices, permit fees, truck weight enforcement needs and implementation.

  • Corporate Authors:

    Case Western Reserve University

    Department of Civil Engineering, 10900 Euclid Avenue
    Cleveland, OH  United States  44106-7201

    Ohio Department of Transportation

    25 South Front Street
    Columbus, OH  United States  43215

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Moses, F
  • Publication Date: 1992-7

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 163 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00628783
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/OH-93/001
  • Contract Numbers: State Job No. 14485(0)
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Apr 12 2002 12:00AM