GRS-IBS Innovative Bridge Construction

Geosynthetic Reinforced Soil–Integrated Bridge System (GRSIBS)

August 20, 2020 

GRS-IBS Bridge Construction Webinar

GRS-IBS is an innovation to help reduce bridge construction time and cost. GRS-IBS projects can be built in weeks instead of months, due to the ease of construction and the use of readily available materials and equipment. Reduced construction schedule translates into less exposure around work zones improving safety. Idaho has adopted GRS-IBS as a focus for the state.

Learn more about GRS-IBS Bridge Construction during this 2.25-hour webinar hosted by LHTAC and HMH Engineering. Webinar includes photos from the recent construction of Ruby Creek Bridge #3 in Boundary County, Idaho.

Training Material Presented (PDF)

December 2018

GRS-IBS Kuna Road Demonstration Workshop Read Ahead Material

Design and Construction Guidelines for Geosynthetic Reinforced Soil Abutments and Integrated Bridge System Publication No. FHWA-HRT-17-080 June 2018 (PDF)

Deployment of the GRS-IBS From 2011-2017 Synthesis Report (PDF)

GRS-IBS Print Set (PDF)

Project Case Histories

November 2016 GRS-IBS Workshop

The Local Highway Technical Assistance Council received funding to provide a demonstration workshop on Geosynthetic Reinforced Soil–Integrated Bridge System (GRS–IBS) bridge construction in southeast Idaho in November 2016. The two single-day workshops included a morning of class instruction using FHWA experts and an afternoon onsite observation of the construction. We were able hear firsthand from Chris Pettigrew from J-U-B, Odo Grandi from LHTAC, along with Jeff Timbrook of Defiance County, Ohio who has been involved with construction of over 30 GRS-IBS bridges.

We had 2 full classes with over 120 attendees and a great response.

Below are some of the handouts we discussed at the workshop.

Visit our Interactive Bridge Map to view, search for, and filter all local and state bridges in Idaho.  Data here is from the National Bridge Inventory and ITD. Remember these are only bridges that 20 ft. or longer.

Example Plans (PDF)

Specifications (Word)

EDC-3 Geosynthetic Reinforced Soil–Integrated Bridge System

The FHWA Center for Accelerating Innovation has additional information regarding GRS-IBS that can be found at the website below.