The six main spans of two new freeway bridges carrying U.S. 36 over the Illinois River are being constructed of cast-in-place segments erected as balanced cantilevers. Thirteen approach spans--each about 220 ft long and weighing 1300 tons--are cast on special beds between bridge piers, then lifted into position and supported by hydraulic jacks while closure pours and post-tensioning are completed. The four end spans are all cast-in-place on falsework. The two bridges are 400 to 700 ft apart and on separate alignments and profiles. Both have a 550-ft main span over the river with 350-ft flanking spans on each side. Further details of the construction method are presented in this article.

  • Availability:
  • Corporate Authors:

    Cahners Publishing Company

    275 Washington Street
    Newton, MA  United States  02158-1630
  • Authors:
    • Munn, W D
  • Publication Date: 1989-12

Media Info

  • Features: Photos;
  • Pagination: p. 38-41
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00490464
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 31 1990 12:00AM