DESIGN OVERCOMES SITE CHALLENGES

It is described how site restrictions, difficult road geometry, existing tunnels and utilities, as well as local opposition to traffic detours through city streets created unusual design demands in a project for the Brooklyn Queens Expressway in New York. The design to solve the problems is described. A computer program, Descus, accommodated the geometric constraints in the new design. The complicated procedure of making the new bridge fit existing conditions is described. A system of 54-inch-diameter, bored-in piles similar to caissons, to support the steel pier cap made it possible to accommodate the utilities. The provision of adequate vertical clearance for traffic below the bridge is described. The use of a temporary 2-lane ramp bridge parallel to the existing road to maintain traffic flow is described.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1519687
• Publication Date: 1988-5

Media Info

• Pagination: p. 34-36
• Serial:
  • Better Roads
  • Volume: 58
  • Issue Number: 5
  • Publisher: James Informational Media, Incorporated
  • ISSN: 0006-0208
  • Serial URL: http://www.betterroads.com

Subject/Index Terms

• TRT Terms: Bridge design; Bridges; Computer programs; Public utilities; Structural design; Support piles
• Uncontrolled Terms: Utilities; Vertical clearance
• Old TRIS Terms: Bored pile; Traffic maintenance
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00468721
• Record Type: Publication
• Files: TRIS
• Created Date: May 31 1988 12:00AM