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Book Chapter

Unsurfaced road investigation and management plan, Fort Leonard Wood, Missouri

By
Jon B. Isaacson
Jon B. Isaacson
Department of Geological and Petroleum Engineering, University of Missouri, Rolla, Missouri 65409, USA
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A. Elaina Hurst
A. Elaina Hurst
Department of Geological and Petroleum Engineering, University of Missouri, Rolla, Missouri 65409, USA
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Danny L. Miller
Danny L. Miller
U.S. Geological Survey Mid-Continent Mapping Center, Rolla, Missouri 65401, USA
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Paul E. Albertson
Paul E. Albertson
U.S. Army Engineer Research and Development Center, Waterways Experiment Station, Vicksburg, Mississippi 39180, USA
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Published:
January 01, 2001

Abstract

Unsurfaced roads, common throughout both private and public sectors, are the source of engineering, economic, and ecological concerns. The U.S. Army currently maintains a large number of unsurfaced roads on its training and testing installations. These road networks must be maintained in a safe and serviceable condition to sustain training and testing requirements. Fort Leonard Wood’s (FLW) road network was examined to identify present problems and future engineer training requirements so that a proper maintenance plan could be recommended. Standard U.S. Army methods were used. A road management system was developed using a dynamic digital database of road conditions linked to the FLW Geographic Information System (GIS). The field data, the extent of road distresses and severity level measurements, were used to determine the unsurfaced road condition index (URCI). A repair budget was estimated for road segments with a URCI value below an established threshold. GIS analyses correlated URCI values to physical and operational conditions. Well-graded soils with a low plastic index were correlated to high URCI values. Operations data were examined to identify types of use, requested maintenance, and the resulting road condition. URCI values were higher for frequently traveled and maintained roads. Continuation of current reductions in maintenance will result in higher repair costs and possible road closures. Road rehabilitation to accommodate future traffic volume and increased vehicle loads will require proper selection of geometric design parameters, aggregate type, gradation, and layer thickness.

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Contents

GSA Reviews in Engineering Geology

The Environmental Legacy of Military Operations

Judy Ehlen
Judy Ehlen
U.S. Army Engineer Research and Development Center, 7701 Telegraph Road, Alexandria, Virginia 22315-3864, USA
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Russell S. Harmon
Russell S. Harmon
U.S. Army Research Office, P.O. Box 12211, Research Triangle Park, North Carolina 27709-2211, USA
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Geological Society of America
Volume
14
ISBN electronic:
9780813758145
Publication date:
January 01, 2001

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