Tackling Major Highway Landslides in the Tennessee Mountains

by David L. Royster, Chf.; Div. of Soils and Geological Engrg., Tennessee DOT, Nashville, Tenn.,

Serial Information: Civil Engineering—ASCE, 1975, Vol. 45, Issue 9, Pg. 85-87

Document Type: Feature article


Interstate 40, running through Tennessee's rugged Smoky Mountains, has been damaged in several places by major landslides. As illustrated by several case histories in this article, the Tennessee DOT is using a variety of approaches to solve slide problems — e.g., reinforced-earth retaining walls, retaining walls of rock-filled wire baskets (gabions), rock buttresses placed at the toe of a potential slide area, placing fills on quick-draining rock pads, installing horizontal drains, and using pumping wells. These challenging problems together constitute almost a textbook of geotechnical engineering approaches for solving landslide problems in rugged terrain.

Subject Headings: Highways and roads | Landslides | Mountains | Case studies | Sliding effects | Retaining structures | Rock fills | Soil stabilization | Tennessee | United States

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