Coastal Flood Roadway Vulnerability Assessment

The primary goal of this research is to create a vulnerability assessment of Georgia’s coastal roadways to storm surge flooding and sea level rise (SLR). Objectives are as follows: (1) Derive roadway crown elevations using the newly released coastal Georgia lidar elevation dataset. This is an improvement to projects in other regions, where the roadway is incorrectly assumed to be the same elevation as the surrounding land (Davis and Dow 2019). (2) Perform hydrodynamic simulations for each storm and SLR scenario using a newly updated, high-resolution (20 m resolution in the horizontal) ADCIRC+SWAN model of coastal Georgia. This is an improvement from existing roadway vulnerability assessments. (3) Overlay the results from Task 1 and 2 and determine overtopped road sections for each flooding scenario.


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    • Status: Active
    • Funding: $98,000.00
    • Contract Numbers:

      GDOT RP 23-18

    • Sponsor Organizations:

      Georgia Department of Transportation

      One Georgia Center
      600 West Peachtree Street, NW
      Atlanta, GA  United States  30308
    • Project Managers:

      Bilsback, William

    • Performing Organizations:

      University of Georgia Research Foundation (UGARF)

      310 E. Campus Rd.,
      Athens, GA  United States  30602
    • Principal Investigators:

      Bilskie, Matthew

    • Start Date: 20230930
    • Expected Completion Date: 20250330
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01895707
    • Record Type: Research project
    • Source Agency: Georgia Department of Transportation
    • Contract Numbers: GDOT RP 23-18
    • Files: RIP, STATEDOT
    • Created Date: Oct 10 2023 11:28AM