EFFECTIVENESS OF ATTACHED BRIDGE WIDENINGS

In 1965, California adopted a policy of attaching widenings. In 1973, a study of fifty-eight widened structures was made to evaluate the effectiveness of this attachment policy. The primary conclusions are: attached widenings provide a smoother riding surface, less maintenance, improved aesthetics and improved safety over what is provided by non-attached widenings; the reclaimed deck area under curbs or sidewalks cause the most problems; attachment through lapped top and bottom deck reinforcing steel gives better performance than does attachment through dowels or key ways; widenings with steel girders are the least troublesome with precast prestressed concrete girders next and cast-in-place conventionally reinforced concrete widenings causing the most problems; transfer of dead load from the widening to the original girders by plastic deformation is not a problem; and the effect of plastic deformation can be greatly minimized by delaying deck closure pours.

  • Corporate Authors:

    California Division of Highways

    1120 N Street
    Sacramento, CA  United States  95814

    Department of Transportation

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Shaw, R V
    • STEWART, C F
  • Publication Date: 1974-3

Media Info

  • Pagination: 57 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00091367
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: CA-DOT-ST4165-1-74-2Final Rpt.
  • Files: NTIS, TRIS, USDOT
  • Created Date: Jul 15 1975 12:00AM