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  USA  95814

    Department of Transportation

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  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