Abstract The Texas Department of Transportation (TxDOT) is currently designing typical highway bridge structures as simply supported using standard precast, pretensioned girders. A total of 15 chapters are published in February 2015, with more to follow.ġ6. The BDP conforms to the AASHTO LRFD Bridge Design Specifications (Customary US units), sixth Edition with the 2014 California Amendments, except as noted describes the basic design concepts and assumptions provides step-by-step design examples introduces innovative practice and serves as a comprehensive reference manual for Caltrans bridge design engineers. The fourth edition of the BDP is divided into three volumes and covers the major areas in bridge and highway structure design. The primary purpose of the BDP is to provide bridge design engineers with application of the California Department of Transportation (Caltrans) design standards and practices that lead to consistency in the design of bridge and highway structure projects on the California highway systems.

The BDP has been published as a live document continuously since the 1990s. The first edition of the Bridge Design Practice Manual (BDP) was published in 1960, and the second and third editions were published in 19, respectively.

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