<p><p><div></p><p><figure id='attachment_3545' style='max-width:697px' class='caption aligncenter'><img class="wp-image-3545 size-full" src="https://www.geoinstitute.org/sites/default/files/geotech-tools-uploads/…; alt="Photograph of partial encapsulation of subgrade soils with a moisture barrier along a roadway in Wyoming." width="697" height="410" /><figcaption class='caption-text'> Moisture barrier installation (Wyoming DOT)</figcaption></figure></p><p></div><h2>Project Summary/Scope:</h2>On a rehabilitation project on I-80 between Laramie and Wolcott, the Wyoming Department of Transportation (WyDOT) placed a coated heat-bonded nonwoven geotextile horizontally to create an in-place geomembrane on a 1-mile section of the existing 30-year-old pavement that was undercut 5 feet.</p><p>The geomembrane was placed at the bottom of the undercut segment and covered with 5 feet of backfill, which was followed by base and pavement. In total, 106,800 square yards of a coated geotextile were used.<br><h2>Performance Monitoring:</h2>Twelve years later, a 1993 project assessment indicated the geomembrane kept the water out of the shale, reducing heave and frost damage.<br><h2><strong>Project Technical Summary: </strong></h2>Steinberg, M.L. (1998). <u>Geomembranes and the Control of Expansive Soils in Construction</u>, McGraw-Hill, New York, NY, 222p.<br><h2>Date Case History Prepared:</h2>November 2012</p></p>