WEATHERING STEEL BRIDGES EVALUATED

Although study evaluating the performance of weathering steel on 49 highway bridges in seven states has been conducted by a task group of state and federal highway officials and steel company corrosion/metallurgical specialists. The study was initiated after a statewide moratorium on the use of unpainted weathering steel was established by the Michigan Department of Transportation in March, 1980. The data collected on the effects of long-term exposure of weathering steel found that, of all the bridges inspected, 30% showed good performance in all areas, 58% showed good performance with moderate corrosion in some areas and 12% showed good overall performance with heavy corrosion in some areas. The study found deicing salts to be the major contributor to excessive corrosion of most bridge materials.

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Filing Info

  • Accession Number: 00390103
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Oct 30 1984 12:00AM