DOUBLE-DECKING THE FREEWAYS

It is noted that the critical need to increase road capacity and the high cost of urban right-of-way has offset the high cost of elevating a roadway. California is one of several states planning, designing or constructing double-deck projects. Such construction has to be done while traffic continues on the at-grade level, a challenge for contractors and designers. The article describes the Downtown Los Angeles site of the first major elevated project constructed in the existing freeway median, the Interstate 110 HOV (high occupancy vehicles) viaduct on a 15 mile HOV transitway project in the corridor. This project illustrates many of he design challenges inherent in double-deck construction. The construction specifications, the seismic design criteria used, and traffic handling plans during construction are briefly described.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/10480594
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Roberts, J F
• Publication Date: 1991-11

Media Info

• Pagination: p. 48-50
• Serial:
  • Civil Engineering
  • Volume: 61
  • Issue Number: 11
  • Publisher: American Society of Civil Engineers
  • ISSN: 0885-7024
  • Serial URL: http://www.pubs.asce.org/ceonline/newce/html

Subject/Index Terms

• TRT Terms: Central business districts; Earthquake resistant design; Earthquake resistant structures; Freeways; Highway bridges; Highway design; Work zone traffic control
• Geographic Terms: Los Angeles (California)
• Old TRIS Terms: Freeway design
• Subject Areas: Bridges and other structures; Design; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00616617
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Nov 30 1991 12:00AM