Metrorrey's Linea 2 Extension Viaduct: A Revolution for Light-rail Precast Concrete Segmental Bridges

This article provides an overview of Metro of Monterrey's new 6.6 km-long Linea 2 Extension Viaduct in Monterrey, Mexico, completed in September 2008, which includes a revolutionary concept for precast concrete segmental light-rail bridges. The 37 m-long, 9.2 m-wide typical spans have a U-shaped cross section that allows the 2 rail tracks to be placed within the structural envelope, which reduces noise, danger of derailment, and visual impact. In addition, the typical segment contains only 45 kg of structural reinforcement/m³ of concrete with 10M (no. 3) bars, whereas most current light rail segmental bridges typically contain concrete with a density of about 120 kg/m³. This was accomplished with a unique use of transverse and longitudinal internal tendons. The concept offers a viable and more economical alternative to the typical box-girder cross sections for light-rail bridges.

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  • Authors:
    • Baamonde, Juan Jose Goni
    • Garcia y Benitez, Antonio
  • Publication Date: 2009


  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References;
  • Pagination: pp 175-188
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01144423
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 4 2009 1:25PM