The Asphalt Pavement Alliance (APA) announced that the Virginia Department of Transportation (VDOT) is the winner of a 2021 Perpetual Pavement Award (PPA): By Conversion. This award was presented for approximately 2.65 miles of an Appomattox Bypass rubblization project on Route 460 in the Lynchburg District. The project, completed by Boxley Materials Company, opened to traffic in 2018. In the award’s inaugural year, this is the first PPA: By Conversion for VDOT. Although, VDOT has previously earned two PPA: By Performance awards.
To qualify for this prestigious award, the pavement must be a new asphalt road constructed over an existing road that meets strict Perpetual Pavement criteria. Boxley constructed the award-winning section of Route 460 over an original concrete pavement that showed signs of failure. The existing 9 inches of jointed plain concrete pavement was rubblized (see YouTube videos), providing a structural base and a drainage layer. It was then paved with an asphalt overlay consisting of 4 inches of BM-25.0D + 0.8, 2 inches of IM-19.0D and 2 inches of SM-12.5D. In addition to being designed as a long-life asphalt pavement, this project also used 26+ percent Reclaimed Asphalt Pavement (RAP), and all the mix produced was warm-mix asphalt.
“We at the Virginia Department of Transportation are truly honored to be recognized by the Asphalt Pavement Alliance with the Perpetual Pavement Award for the Route 460 Bypass in Appomattox County,” said Chris Winstead PE, Lynchburg District Engineer, VDOT. “This major highway sees substantial traffic, and after a slow progression of joint faulting, we sought a solution that would be sustainable and perpetual. VDOT materials engineers Don French and Robert Reid determined the best route to take was rubblization of the existing concrete—maintaining drainage. Then came the placement of a high modulus base and surface asphalt—resulting in a perpetual structure. The VDOT engineers, partners and contractors delivered. We are proud of their efforts, which symbolize VDOT’s commitment to building and maintaining quality roadways, now and into the future.”