Latest Issue of Concrete Bridge Views Newsletter Now Online

The November/December 2013 issue of the Concrete Bridge Views newsletter is now online and contains the following articles: 

Landmark in the Works: Novel Use of Post-Tensioning in a Highly Curved Bridge - Paul Claudio Osses, PE, SE; Buckland and Taylor, Huanzi Wang, PhD, PE; AECOM, Richard Patterson, PE, SE; Buckland and Taylor. The Mountlake Triangle Project (MTP) Bridge is a highly-curved 400-foot long cast-in-place (CIP) post-tensioned pedestrian bridge spanning over Mountlake Boulevard between the Seattle Sound Transit light rail station and the University of Washington (UW) campus in Seattle. Construction of the bridge is scheduled to finish in early 2014. It is anticipated that this daring bridge will become a landmark for both the UW and the City of Seattle. Full Article

Evaluation of Common Design Policies for Precast Prestressed I-Girder Bridges - Richard Brice, Bijan Khaleghi, Washington State DOT, and Stephen J. Seguirant, Concrete Technology Corp, Tacoma, Washington. The American Association of State Highway and Transportation Officials (AASHTO) Load Resistance Factor Design (LRFD) Bridge Design Specifications, hereinafter referred to as the AASHTO LRFD Specifications, prescribes the minimum design requirements for safe highway bridges. However, many bridge owners have adopted more stringent policies for the design of precast-prestressed girder bridges. These policies specify design requirements for section properties, allowable tensile stress, and continuity. Full Article

Welded Wire Reinforcement Utilized as Shear Reinforcement in Concrete Bridge Girders - Todd R. Hawkinson, PE, Wire Reinforcement Institute. Welded Wire Reinforcement (WWR) is seeing an increased use as shear reinforcement in bridge girders, such as AASHTO Type II, III and IV-4, Bulb-Tee Girders and U-Girder Sections, due to its available increased strength and the reduction in time or labor cost to install the material in the precast beds. State departments of transportation (DOT) allow the use of welded wire shear and confinement reinforcement in girders and many have developed standards for its use. Full Article

Concrete Bridge Views is published jointly by the Federal Highway Administration and the National Concrete Bridge Council.