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NC Coastal Highway Vulnerability.
| 题名： | NC Coastal Highway Vulnerability. |
| 作者： | overton, m. f. fisher, j. s. |
| 关键词： | terrain, shore protection, erosion control, dune sands, beach erosion, damage assessment, risk, highway corridors, digital maps, bathymetry, highway planning, coastal engineering |
| 摘要： | The vulnerability of North Carolina coastal highways to damage from persistent shoreline erosion and individual storms is a major problem for NCDOT. This report provides an update to a 1991 study that identified 'hot spots' where the highway was likely to require some remediation to maintain the transportation link. The present analysis identifies the potential vulnerability for a 20-year period beginning in 2003. The study includes both a long-term analysis based upon the rates of shoreline change and the location of the highway, and a short-term analysis based upon the simulation of individual storms. The latter analysis was only undertaken at an area near Kitty Hawk on the Outer Banks. The overall conclusion of this study is that there are numerous locations along the North Carolina coast where the combination of highway location and shoreline erosion lead to vulnerable conditions now, or within the next 20 years. Current plans are underway for beach nourishment at most of the locations identified as potential hotspots. If these beach nourishment projects are not carried out, then NCDOT will be confronted with many miles of the coastal highway system that will be at risk for damage from persistent shoreline erosion and storms. / NOTE: Final rept. (July 2001 - June 2003). / Supplementary Notes: Sponsored by Department of Transportation, Washington, DC. Research & Innovative Technology Administration (RITA). and Federal Highway Administration, Raleigh, NC. North Carolina Div. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0717；88p |
| 报告类型： | 科技报告 |
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