Software details, features and how to purchase

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WinBDS analyzes or designs orthogonal bridge frames and is applicable to the majority of concrete bridges being designed today.

CROSS SECTIONS may by specified by using a predefined, standard box girder superstructure shape or by adding or subtracting geometrical parts using predefined part codes.

LIVE LOADS can be automatically generated for the AASHTO HS20-44 and the California P13 truck by simply giving the number of live loads lanes may be applied to the structure by describing the axle loads, distance between axles and number of live load lanes. Uniform lane loads can be defined with moment and shear riders. Other automatically generated live loads include the Cooper Loading and a user defined vehicle of up to 97 axles.

PRESTRESSED CONCRETE analysis and design capabilities include: Continuous prestress, Simple span prestress, Segmental prestress, 100 prestress cable paths per frame, 3D cable friction losses, Primary and Secondary effects, Cross-section analysis, Ultimate capacity check, AASHTO shear requirements, Tendon elongations, and calculation of AASHTO long-term losses.

OUTPUT results are organized in the same order as the input data. All input data is echoed in the output reports. Output reports include section properties, dead load and additional fixed loads results, live load force envelopes, prestress results including required P-Jack, mild steel requirements, and shear design stirrup requirements. Additional reports are generated for the Rating Subsystem and Prestresed Precast Girder Subsystem.

GRAPHICAL DISPLAY of moment and shear envelopes are available after an analysis has been performed. Additional plots are available for deflections, top and bottom fiber stresses, prestress force, prestress cable path and influence lines. These plots can be displayed for all spans in the bridge or for an individual span or for any sequential list of spans. Where applicable, the plots include the different trials that are available, such as: dead load, added dead load, live load no. 1 (both negative and positive envelopes), prestress, etc. These loads can be plotted individually or combined into one load case.

Please send all inquires to Koung Thao at

WinBDS Features

  • Window Graphical User Interface
  • Analysis or Design Bridge Frame
  • Orthogonal Plane Frame Analysis
  • Prismatic or Non-Prismatic Members
  • Hinge Modeling Capabilities
  • Automatically Generated Live Loads
  • Prestressed Concrete Analysis and Design
  • AASHTO Loading Combinations


  • Shear Diagrams
  • Moment Diagrams
  • Influence Lines
  • Stress Diagrams
  • Deflection Diagrams
  • Prestress Force Diagrams
  • Bridge Capacity Rating for Concrete Bridges
  • English and Metric Output Reports

Our Software Selection


    WinSEISAB is an analysis tool that allows the bridge engineer to keep pace with developments in seismic design of bridges.

  • WinABUD

    WinABUD designs or checks a reinforced concrete abutment using the 1996 AASHTO with Interims and Revisions by Caltrans.

  • WinRECOL

    WinRECOL analyzes, designs or checks a reinforced concrete columns.

  • WinFAD

    WinFAD is a computer program developed to assist the bridge engineer in designing or checking spread and pile concrete footings subjected to eccentrically applied axial loads that produce biaxial bending moments.

  • WinBDS

    WinBDS analyzes or designs orthogonal bridge frames and is applicable to the majority of concrete bridges being designed today.

  • CAPP

    CAPP is a fully functional 2-D pushover program with unique and unprecedented analytical and modeling capabilities.


    AVI FILE CREATOR allows the user to create computer animation of the section under the applied loading while simultaneously showing a graph of the response.

Software Requirements and Ordering Information

WinSEISAB is a Windows based program that runs under any Windows 32-bit OS, and has the following hardware requirements.
  • 16Meg RAM (32Meg of RAM recommended)
  • 5MB of free hard drive space needed for WinSEISAB
What is included?
  • Software media
  • On-line Help System
  • Warranty
  • 30 Day Free Support
Please send inquires to Koung Thao at
Annual support, maintenance and enhancements will be provided by TRC for an additional, optional fee.

Customer Support includes:
  • Customer assistance by fax,telephone and e-mail.
  • Assistance in data preparation and interpretation of results.
You can always email our technical support at