Developing Bridge-Scour Equations for Colorado Mountain Streams

Details

• Creators:
  Molinas, Albert ; Mommandi, Amanullah ; Khan, Aziz R. ; Sollenberger, Brett
• Corporate Creators:
  Colorado. Dept. of Transportation. Research Branch ; Hydrau-Tech, Inc.
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Bridge abutments
  • Bridges
  • Mountains
  • Streams
  • Scour
  • Pier scour
  • local scour
  • effects of gradation
  • HEC-18
  • steep mountain streams
  More +
• Publication/ Report Number:
  CDOT-2018-10
• Resource Type:
  Tech Report
• Geographical Coverage:
  Colorado ; United States
• Corporate Publisher:
  Colorado. Dept. of Transportation. Research Branch
• NTL Classification:
  NTL-ENERGY AND ENVIRONMENT-Environment Impacts ; NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures
• Abstract:
  The primary objective of this study is to provide a technical tool to compute bridge scour in steep mountain channels. The Colorado Department of Transportation (CDOT) builds and maintains many roadway projects with bridges that cross rivers and small streams. CDOT currently uses Federal Highway Administration's (FHWA's) HEC-18 methods to estimate bridge pier and abutment scour values, but HEC-18 equations were developed using hydraulic conditions for flat channels. The equations developed in this study will be applicable to the range of slopes, velocities, and depths encountered in bridges crossing steeper Colorado streams.
• Format:
  PDF
• Alternate URL:
  https://www.codot.gov/programs/research/pdfs/2018-Research-Reports/2018-10/view
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/36594/dot_36594_DS1.pdf
• File Type:
  [PDF - 45.11 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:e59b7feb996c95bf65bde4ff42f32797664bb6e49189678e960c4313135b3770