Engineering Resource Library

The data and documentation you need to specify, bid, and build with confidence.

ECO-SPAN® Standard Details

Download CAD-compatible details for our most common arch shapes and configurations.

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Bridge & Culvert Specifications

Comprehensive guide specifications to ensure your project meets AASHTO and ASTM standards.

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Department of Transportation Approvals

The ECO-SPAN® system is approved for use by numerous state agencies. Access specific approval letters and standard drawings below.

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Brochures & Case Studies

High-level overviews of our systems for presentation to owners and stakeholders.

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Can't Find a Specific Detail?

Our engineering team can provide custom drawings for unique project skews, loads, or site constraints.