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Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Innovation Center.

This report describes an evaluation to determine the capabilities and limitations of the KeySystem I Retaining Wall System, a mechanically stabilized earth structure developed, designed, and supplied by Keystone Retaining Wall Systems, Inc. The evaluation was conducted based on design, construction, performance, and quality assurance information outlined in the HITEC Protocol. KeySystem I features modular block facing to which KeyStrips are attached. KeyStrips are structural welded wire, grid-type reinforcement produced from high-strength steel.