ECO-SPAN Design Center

ECO-SPAN® offers comprehensive engineering tools and technical support to expedite the concrete arch design process and reduce engineering costs.

Instant Design

ECO-SPAN® Instant Design is an intuitive, quick way to tell us about your project.  The form includes many aspects of three-sided bridge best design practices built in to guide users to the most effective use of a precast arch at their site.  After you complete the form, we will send complimentary project-specific application drawings within a few hours. Budget estimates are generally available within one business day. Site plans and additional information or questions may be sent to For assistance please call 800.241.0925.
Go To Instant Design Online Form Download Fax-Back Form

Waterway opening

These charts provide open area of each span and rise combination for comparison with project requirements.

Arch-Box (AB) Versa™ Single Radius (VS) Versa™ Multiple Radius (VM)

Coordinates for hydraulic modeling

Modeling with HEC-RAS bridge editor, HY-8 or other software?  These tables provide specific coordinates, ready to go.

Arch-Box (AB) Versa˜ Single Radius (VS) Versa˜ Multiple Radius (VM)

Foundation Loads

Designing a foundation for a precast arch?  Find reactions and estimated width in these charts.

Arch-Box Reactions


Comprehensive Support

Additional services are available to assist with bid drawing preparation.

  • Foundation / Abutment / Retaining Wall Design
  • Precast Abutment Design
  • Construction Drawings for Bridge Installation
  • Take-off / Bill of Materials
  • 3-D Modeling / Rendering
  • Hydraulic Modeling in HY-8
  • Hydraulic Design using existing HEC-RAS Model
  • Type/Size/Location Drawings
  • Load Ratings for Existing Structures
  • VE / CRI Support

Precast Concrete Arches

Let our design center create a precast arch system that will fit perfectly and hold up to your specific demands.
Precast Concrete Arches

Precast Concrete Bridges

Our designers will create a funtional precast bridge to quickly fill your needs and requirements.
Precast Concrete Bridges

Precast Concrete Culverts

We can design a custom precast culvert to allow you a quick and easy installtion at your location.
Precast Concrete Culverts

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