A vital link in completing the Blue Ridge Parkway, Linn Cove Viaduct hugs the contours of a rugged mountain. Top down construction of the precast post-tensioned segmental cantilevers preserved the natural landscape. How to preserve the scenic environment around Grandfather Mountain in North Carolina was a problem that left a seven mile gap in the 469 mile (755 km) long Blue Ridge Parkway for more than 20 years. The solution is a precast concrete segmental viaduct that was built from the top down without disturbing the site or its scenic vistas. The environmental constraints and inaccessibility of the site and alignment problems make Linn Cove the most complicated concrete segmental bridge ever constructed. Horizontal alignment includes spiral curves going into circular curves with radii as small as 25 ft. (7.6 m) curving in two directions.

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  • Accession Number: 00389997
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Nov 30 1984 12:00AM