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Hydraulic and geomorphic monitoring of experimental bridge scour mitigation at selected bridges in Utah, 2003-05

Scientific Investigations Report 2006-5033

Prepared in cooperation with the Utah Department of Transportation
By:
and

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Abstract

Unique bridge scour mitigation designs using concrete A-Jacks were developed by the Utah Department of Transportation and installed at the Colorado River Bridge at State Road 191 and the Green River Bridge at State Road 19. The U.S. Geological Survey monitored stream reaches at these sites by collecting streambed-topography and water-velocity data from 2003 through 2005. These data were acquired annually from a moving boat with an acoustic Doppler current profiler and a differential global positioning system. Raw unordered data were processed and readied for interpolation into organized datasets with DopplerMacros, a set of computer programs. Processed streambed topography data were geostatistically interpolated by using Ordinary Kriging, and inverse distance weighting interpolation was used in the development of the two-dimensional velocity datasets. These organized datasets of topography and velocity were developed for each survey of the two bridge sites. A comparison of the riverbed topography data for each survey was done. An increase in bed elevation related to the installation of the A-Jacks scour countermeasures is evident at the Colorado River Bridge at State Road 191. The three topographic datasets acquired after the installation at the Green River Bridge at State Road 19 show few changes.

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Hydraulic and geomorphic monitoring of experimental bridge scour mitigation at selected bridges in Utah, 2003-05
Series title:
Scientific Investigations Report
Series number:
2006-5033
Year Published:
2006
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Salt Lake City, UT
Contributing office(s):
Utah Water Science Center
Description:
Report: iv, 16 p.; Appendixes A-D in separate files
Country:
United States
State:
Utah
Online Only (Y/N):
Y
Additional Online Files (Y/N):
Y