Abstract: This article focuses on a 6.5-mile stretch of Interstate 81 in Virginia that was singled out for an Asphalt Pavement Alliance Perpetual Pavement Award in 2006. The section of asphalt, located in a wet/freeze zone complicated by clay soil, first opened to traffic in 1965 and did not require maintenance or repairs until 1991. A research scientist at VDOT’s Virginia Transportation Research Council credits the segment’s longevity to light traffic loads early in its existence, a sturdy road design, and a contractor who did everything right. An important reason may be that this stretch has edge drains, while others along the same route that have required frequent milling and overlays, do not. The author also describes VDOT pavement practices and use of Perpetual Pavement design.
Publication Year: 2010
Publication Date: 2010-03-01
Language: en
Type: article
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