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The Contech Design Center

The Contech Design Center provides engineers unparalleled flexibility in the layout and configuration of a Contech Rolled Girder System. Our latest release includes options previously unavailable in a free, web-based design tool:

  • A 2D/3D design environment with high resolution graphics including BIM model output.
  • The ability to import a PDF site plan and design a system to scale over the plan.
  • Provide instant access to customized, project-specific drawings.
  • Design multiple systems per project and save for future use.
  • Digitally collaborate using the new “Project Collaboration” feature. Share your project easily with anyone through the new project management page.
Contech Design Center
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Technical information for this product is centrally located in the technical guides section.

View Technical Information
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Strong, lightweight rolled girder bridges to accelerate your project

Strong, yet lightweight, Big R Bridge® rolled girders ship and install quickly on any foundation type and without the need for poured concrete or specialized bridge construction companies. Modular Bridges can often be installed in just a few hours, using local crews and on-hand equipment – saving you time and money in the process. 

Features and Benefits

  • Designed for AASHTO HL-93 or user specified permit loads
  • Permanent or temporary applications
  • Typical spans up to 120', or 150' with composite concrete deck
  • Single or multiple lanes
  • 8' wide modules are typical for Modular design
  • Modular or component designs
  • Standard highway loads and greater
  • Easy installation, even in rugged terrain
  • Shorter bridges can be installed with excavators or wheel loader
  • Use local contractors or your own crew
  • Shorter road closure times
  • No waiting for concrete to cure
  • Bearing plates and pads
  • Wide variety of guide rail  or curb systems available 
  • Excellent fish passage solutions

Options

  • Wearing surface: cast-in-place or precast concrete, asphalt, steel grating, wood or gravel
  • Finish: Weathering, Painted, Galvanized, Zinc or Metalized Steel Explore finish options
  • Sidewalks and utility support capability
  • Steel back wall systems
  • Skewed ends to suit site
  • Faux trusses or arches for aesthetic treatments

Steel Rolled Girder Bridge Sections

Modular sections are usually about 8' wide for shipping on standard trailers. Lengths can reach up to 80'. Lengths greater than 80' will have  field-bolted girder splices. Custom lengths and widths are easily accommodated.

Ideal for permanent or temporary applications

Big R rolled girder bridges are favored by municipalities, counties, transportation authorities and resource companies for stream crossings, road or rail overpasses, detour bridges and more. 

Resource tools

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Start a Project

You are using an unlicensed and unsupported version of Evoq Content. Please contact your Systems Administrator for information on how to obtain a valid license.
You are using an unlicensed and unsupported version of Evoq Content. Please contact your Systems Administrator for information on how to obtain a valid license.