Autumn 2016

When bridges in the US need to be repaired or replaced, the Departments of Transportation (DoT) often make use of geosynthetic reinforced soil-integrated bridge system (GRS-IBS). This method represents savings in both time and costs, as well as minimising environmental impact. 

To construct GRS-IBS, the DoTs will use various materials for facing and reinforcement, including TenCate Geosynthetics.

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Construction of a bridge abutment using GRS-IBS, an integrated bridge system based on foundations reinforced with TenCate Mirafi®HP (high performance)

The bridge that carries Keefer Highway near Sunfield (Ionia County, Michigan) across Sebewa Creek had deteriorated to such an extent that it needed to be replaced – but with as little highway downtime as possible. In addition, the bridge reconstruction had to be very cost effective.

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To meet the limited budget for building the bridge abutments, the Michigan Department of Transportation opted for the Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS), an integrated bridge system based on foundations reinforced with TenCate Mirafi® HP (High Performance). 

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The Michigan Department of Transportation is an advocate of the innovative GRS-IBS for the construction of this type of bridge abutment. The system helps save costs, shorten construction time, lengthen lifespan and reduce the CO2 footprint. Further, deep foundation design is not required, greatly simplifying design and construction.

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The renovated bridge near Sunfield (Ionia County, Michigan) across Sebawa Creek. This is the first bridge in Michigan based on the Geosynthetic Reinforced Soil-Integrated Bridge system

TenCate Mirafi® HP geotextiles used for reinforcement also contribute to efficiency; they are relatively light and easy for a small crew to install.

Blue fabric (Tecawork Blue 65287)