Development of Wave and Surge Atlas for the Design and Protection of Coastal Bridges in South Louisiana - Phase II

The recently completed Louisiana Department of Transportation and Development (DOTD) Storm Surge and Wave Atlas contains significant hydraulic information that will be useful in analyzing storm surge and wave forces on existing and new coastal bridges. The current Atlas contains surge and wave information for storms with a 1% chance of occurrence each year (100-year return interval). This information is useful for computing wave loads on bridge superstructures. However, many issues encountered by DOTD engineers require other frequency meteorological/oceanographic information (e.g., 5-, 10-, 25-, 50-year return intervals). For instance, engineers may design a temporary facility (a detour bridge) based on a 5-year return interval (20% chance of occurrence each year). Bridges whose service life is approaching their design life may undergo retrofitting based on a return interval different from the 100-year return interval. The information needed for these designs exists in the Level III analysis solution files developed in the recently completed Wave and Surge Atlas (Phase I) project. Because of the size of the study area and the amount of information available in the recently completed Surge/Wave Atlas (GIS database) for the 100-year return interval, it is prudent to provide a separate geographic information system (GIS) database for each of the other desired return intervals. Therefore, this work will produce a separate GIS database for a 50-year return interval (2% chance of occurrence each year), a 25-year return interval (4% chance of occurrence each year), a 10-year return interval (10% chance of occurrence each year), and a 5-year return interval (20% chance of occurrence each year). This research intends to develop and extend the previously completed wave and surge atlas for the design and evaluation of coastal bridges in south Louisiana.


  • English


  • Status: Active
  • Contract Numbers:


  • Sponsor Organizations:

    Louisiana Department of Transportation and Development

    P.O. Box 94245
    1201 Capitol Access Road
    Baton Rouge, LA  United States  70804-9245

    Louisiana Transportation Research Center

    4101 Gourrier Avenue
    Baton Rouge, LA  United States  70808
  • Project Managers:

    King, William

  • Performing Organizations:

    INTERA Incorporated of Texas

    100 SW 75the Street, Suite 107
    Gainesville, FL  United States  32607
  • Principal Investigators:

    Sheppard, D

  • Start Date: 20150212
  • Expected Completion Date: 0
  • Actual Completion Date: 20160511
  • Source Data: RiP Project 39955

Subject/Index Terms

Filing Info

  • Accession Number: 01568383
  • Record Type: Research project
  • Source Agency: Louisiana Transportation Research Center
  • Contract Numbers: 15-1ST
  • Files: RiP
  • Created Date: Jun 27 2015 1:00AM