FHWA published “Design and Construction Guidelines for Geosynthetic Reinforced Soil (GRS) Abutments and Integrated Bridge Systems (IBS),” a manual on the state of the art and recommended practices for designing and constructing GRS-IBS. A revision of an earlier guide, the manual reflects lessons learned from GRS-IBS projects constructed through EDC, which promoted the technology from 2011 to 2016. Revisions include additional details on the design, construction, quality assurance, inspection, maintenance, and repair of GRS-IBS, along with revised material specifications, site selection criteria, and hydraulic guidance. For information on GRS-IBS, contact Daniel Alzamora of the FHWA Resource Center.

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