Filters: Tags: Upper Iowa River (X)3 results (55ms)
These geospatial data were collected during the August 30, 2016 topographic and hydrographic survey of the Upper Iowa River in the vicinity of IA-76 near Dorchester, IA.
Site Information for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2016-18
These data are supplemental site information in portable document format (.pdf) collected during 2016-2018 field seasons for select bridges in the United States (Dudunake and others, 2018). These files describe building plans for countermeasures, a field from to describe conditions during site assessment, and a photo summary of the study area.
Geospatial Data for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2016–18
Scouring of streambed material surrounding bridge structures is a leading cause of bridge failure in the United States. Damages resulting from bridge failure oftentimes lead to financial burdens and loss of life. To date, there has been no comprehensive evaluation of the current (2016) effectiveness of the guidance or overall long-term performance of bridge-scour countermeasures provided in the Federal Highway Administration, Hydraulic Engineering Circular No. 23, Bridge Scour and Stream Instability Countermeasures. To that end, the U.S. Geological Survey, in cooperation with the Federal Highway Administration, obtained bathymetric, topographical, and other data at 20 of the surveyed sites across the United States...