CASE STUDY
Rock County , Minnesota, used the GRS - IBS system with Solmax geosynthetics to replace a timber bridge , ensuring fast, cost-effective construction without deep foundations.
The bridge replacement was a coordinated effort between the Minnesota Department of Transportation (MnDOT), Federal Highway Administration (FHWA) and Rock County Department of Highways.
Key Details About Case Study Rock County Grs Ibs Bridge Replacement
Replacement or New Bridge : The new bridge consists of 82-ft-long single-span prestressed concrete side-by-side boxes utilizing Geosynthetic Reinforced Soil Integrated Bridge System ( GRS - IBS ) technology.
The GRS - IBS bridge in Rock County features a unique 5.2% grade, influencing performance metrics. At least 200 GRS - IBS bridges were built nationwide by September 2014, showcasing broad implementation. Monitoring revealed settlement of 1.25 inches at the North abutment and 1.75 inches at the South abutment. The project faced funding challenges, costing approximately $200,000 for monitoring ...
Useful Notes on Case Study Rock County Grs Ibs Bridge Replacement
The Solution Rather than replace the superstructure of the existing bridge , VTrans found it more economical to replace the entire bridge using the innovative Geosynthetic Reinforced Soil-Integrated Bridge System ( GRS - IBS ) along with the Diamond Pro® Pin for the facing system. GRS consists of alternating layers of compacted fill and closely spaced geosynthetic reinforcement. IBS is three main ...
The GRS technique can be applied to many facets of earthwork, such as walls, abutments, culverts, slope stability, rock fall barriers, roadway support, and integrated bridge systems. IBS is a fast, cost-effective method of bridge support that uses GRS technology to blend the roadway into the superstructure.
County Road 55 over Minnesota Southern Railway
As for the bridge's performance in response to the 5.3 percent grade, the bridge abutments have not experienced any significant movements that could be attributed to the presence of the large grade.</p><p>The CR-55 Bridge project was an example of how GRS - IBS technology is continuing to push its limits.
The Geosynthetic Reinforced Soil-Integrated Bridge System ( 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. GRS - IBS can help ...
Key Details About Case Study Rock County Grs Ibs Bridge Replacement
Geosynthetic Reinforced Soil-Integrated Bridge Systems ( GRS - IBS ) offers unique advantages, particularly in the construction of small bridges . Construction costs are typically 25 to 60 percent lower than conventional construction methods.
The geosynthetic reinforced soil integrated bridge system is a design and construction method to build single-span bridges quickly and cost effectively.