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Highways in the Coastal Environment: Second Edition

Publication No. FHWA-NHI-07-096

June 2008

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Highways in the Coastal Environment Second Edition

Technical Report Documentation Page
1. Report No. 2. Government Accession No.
FHWA NHI-07-096
3. Recipient's Catalog No.
4. Title and Subtitle
Hydraulic Engineering Circular 25
Second Edition
5. Report Date
February 2008
6. Performing Organization Code
7. Author(s)
Scott L. Douglass and Joe Krolak
8. Performing Organization Report No.
9. Performing Organization Name and Address
Department of Civil Engineering
University of South Alabama
307 University Boulevard
Mobile, Alabama 36688
10. Work Unit No. (TRAIS)
11. Contract or Grant No.
12. Sponsoring Agency Name and Address
Office of Bridge Technology
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, D.C. 20590
13. Type of Report and Period Covered
14. Sponsoring Agency Code
15. Supplementary Notes
Project Manager: Joe Krolak, FHWA Office of Bridge Technology
Technical Reviewers: Dr. Richard Weggel, Dr. Billy Edge, Dr. Kevin Bodge, Rick Renna, Dave Henderson
This report provides guidance for the analysis, planning, design and operation of highways in the coastal environment. The focus is on roads near the coast that are always, or occasionally during storms, influenced by coastal tides and waves. A primary goal of this report is the integration of coastal engineering principles and practices in the planning and design of coastal highways. It is estimated that there are over 60,000 road miles in the United States that can be called "coastal highways." Some of the physical coastal science concepts and modeling tools that have been developed by the coastal engineering community, and are applicable to highways, are briefly summarized. This includes engineering tools for waves, water levels, and sand movement. Applications to several of the highway and bridge planning and design issues that are unique to the coastal environment are also summarized. This includes coastal revetment design, planning and alternatives for highways that are threatened by coastal erosion, roads that overwash in storms, and coastal bridge issues including wave loads on bridge decks.
Key Words
Distribution Statement
19. Security Classif. (of this report)
20. Security Classif. (of this page)
21. No. of Pages
22. Price
Form DOT F 1700.7 (8-72) Reproduction of completed page authorized
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Updated: 09/22/2014

United States Department of Transportation - Federal Highway Administration