New Era, MI
Concrete Cloth™ GCCM: Michigan DOT Culvert Invert Lining

Project Overview

On highway M-20, east of New Era, MI, a 70-foot metal plate arch culvert was experiencing moderate to severe section loss in the invert from corrosion and abrasion. The steep decline in condition due to corrosion was attributed to the intermittently flowing creek and the invert’s frequent exposure to oxygen; this was observed in early 2017 by Michigan Department of Transportation (MDOT) personnel. The active creek flow could not be entirely stopped during the placement of the Geosynthetic Cementitious Composite Mat (GCCM) as by-pass over the road was deemed impractical.


The MDOT had plans to replace the 12' x 8' culvert in 10 to 15 years and desired a repair option that would extend the life of the culvert invert for at least 10 additional years. MDOT’s Grand Region Bridge Engineer, Jonathan Bruinsma, was introduced to Concrete Cloth at the annual Michigan Bridge Conference and learned that the fabric would last the required length of time until replacement as well as provide a protective barrier against further invert deterioration. He contacted Milliken Infrastructure Solutions, LLC and was assured that the state of the invert’s deterioration made Concrete Cloth GCCM an excellent candidate for the repair.

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