Development of wave and surge atlas for the design and protection of coastal bridges in south Louisiana : [tech summary].

Details

• Creators:
  Sheppard, D. Max
• Corporate Creators:
  Louisiana Transportation Research Center
• Subject/TRT Terms:
  • Coasts
  • Bridges
  • Storm surges
  • Hurricanes
  • Water waves
  • Wave height
  • Geographic information systems
  • Bearing capacity
• Publication/ Report Number:
  State Project No. 30000118 ; LTRC Project No. 10-4ST
• Resource Type:
  Brief
• Geographical Coverage:
  Louisiana
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  The failures of highway bridges on the Gulf Coast seen in the aftermath of Hurricane Katrina in 2005 were unprecedented. ; In the past four decades, wind waves accompanied by high surges from hurricanes have damaged a number of coastal ; bridges along the north coast of the Gulf of Mexico. Hurricane Camille in 1969 caused damage to bridges across Bay St. ; Louis and Biloxi Bay in Mississippi. Katrina damaged the same bridges rebuilt after Camille. In 1979, Hurricane Frederic ; destroyed the bridge connecting the mainland to Dauphin Island, a barrier island near the entrance of Mobile Bay, ; Alabama. In the 2004 hurricane season, Hurricane Ivan destroyed the bridge on I-10 over Escambia Bay in Florida. ; There are a large number of coastal bridges in South Louisiana. This study addresses ; several aspects of evaluation of these bridges including: how many bridges are vulnerable ; to the impact of hurricanes; determination of the design wave and surge conditions at ; those bridge locations; and calculation of the wave forces on the bridge superstructures. ; The storm surge elevation, wave height, and wave period are the three most important ; meteorological and oceanographic (met/ocean) parameters needed to calculate wave ; forces according to AASHTO’s Guide Specifi cation for Bridges Vulnerable to Coastal ; Storms. This information is currently not available for South Louisiana’s coastal waters. To ; address these concerns, LTRC funded this project to develop the design surge elevations ; and wave heights for South Louisiana, and present the data in a Geographical Information ; System (GIS) database.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28645/dot_28645_DS1.pdf
• File Type:
  [PDF - 223.12 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:8bd71fdcd5dd1388d09ca0ee5682b311f9d439cd867b5e3b64ae9762feb3614a