REHABILITATION OF STEEL TRUSS BRIDGES USING A SUPERIMPOSED ARCH SYSTEM

A system for reinforcing steel truss bridges has been developed. The system consists of superimposed arches with hangers supporting the existing floor beams, which may be reinforced or replaced with new ones, as well as additional intermediate floor beams. To date this system has been applied to three bridges ranging in span from 74 to 136 ft. The first application was to a 100-year-old, 74-ft. Pratt truss bridge at Coudersport, Pennsylvania. For a total cost of $62,000, including painting of the bridge, the borough of Coudersport was able to increase the posted weight limit of the bridge from 3 to 20 tons. Given reasonable routine maintenance, the bridge could provide service for another 100 years. During the installation of the reinforcing system, which took 3 weeks, traffic flow was maintained.

Media Info

  • Media Type: Print
  • Features: Figures; Photos;
  • Pagination: pp 146-149
  • Monograph Title: Second bridge engineering conference. volumes 1 and 2
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00390859
  • Record Type: Publication
  • ISBN: 03090036593
  • Files: TRIS, TRB
  • Created Date: Dec 30 1984 12:00AM