Effective Noise Barriers: Case Study from North Carolina

When the North Carolina Department of Transportation (DOT) widened a 6.2 mile corridor of I-40, the design-build team recognized several design changes that could improve the acoustical performance, aesthetic appeal and context sensitivity of the noise wall near Jones Franklin Road. Although the wall’s initial design complied with the state’s 2004 traffic noise abatement policy, North Carolina DOT was amenable to the changes. The changes included shifting the horizontal alignment of the noise wall toward the highway, revising the heights of the modeled barrier segment to set the tops of the panels to whole-foot elevations, maintaining vegetation between the edge of the pavement and the right-of-way in the vicinity of the noise wall, and re-evaluating the need for a maintenance gap in the noise wall.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos;
  • Pagination: p 41
  • Serial:
    • TR News
    • Issue Number: 288
    • Publisher: Transportation Research Board
    • ISSN: 0738-6826

Subject/Index Terms

Filing Info

  • Accession Number: 01503520
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Jan 9 2014 8:43AM