Iowa’s Bridge and Highway Climate Change and Extreme Weather Vulnerability Assessment Pilot Anderson, Christopher Claman, David Mantilla, Ricardo
dc.contributor.department Institute for Transportation 2018-02-16T05:02:13.000 2020-06-30T04:52:18Z 2020-06-30T04:52:18Z 2015-04-15 2015-03-01
dc.description.abstract <p>The Iowa Department of Transportation (DOT) is responsible for approximately 4,100 bridges and structures that are a part of the state’s primary highway system, which includes the Interstate, US, and Iowa highway routes. A pilot study was conducted for six bridges in two Iowa river basins—the Cedar River Basin and the South Skunk River Basin—to develop a methodology to evaluate their vulnerability to climate change and extreme weather. The six bridges had been either closed or severely stressed by record streamflow within the past seven years. An innovative methodology was developed to generate streamflow scenarios given climate change projections. The methodology selected appropriate rainfall projection data to feed into a streamflow model that generated continuous peak annual streamflow series for 1960 through 2100, which were used as input to PeakFQ to estimate return intervals for floods. The methodology evaluated the plausibility of rainfall projections and credibility of streamflow simulation while remaining consistent with U.S. Geological Survey (USGS) protocol for estimating the return interval for floods. The results were conveyed in an innovative graph that combined historical and scenario-based design metrics for use in bridge vulnerability analysis and engineering design. The pilot results determined the annual peak streamflow response to climate change likely will be basin-size dependent, four of the six pilot study bridges would be exposed to increased frequency of extreme streamflow and would have higher frequency of overtopping, the proposed design for replacing the Interstate 35 bridges over the South Skunk River south of Ames, Iowa is resilient to climate change, and some Iowa DOT bridge design policies could be reviewed to consider incorporating climate change information.</p>
dc.format.mimetype PDF
dc.identifier archive/
dc.identifier.articleid 1073
dc.identifier.contextkey 6989874
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath intrans_techtransfer/74
dc.language.iso English
dc.source.bitstream archive/|||Sat Jan 15 01:47:26 UTC 2022
dc.subject.disciplines Civil Engineering
dc.subject.keywords Bridge substructures
dc.subject.keywords Bridges
dc.subject.keywords Climate change
dc.subject.keywords Embankments
dc.subject.keywords Flood plains
dc.subject.keywords Floods
dc.subject.keywords Highways
dc.subject.keywords Rainfall
dc.subject.keywords River basins
dc.subject.keywords Rivers
dc.subject.keywords Streamflow
dc.subject.keywords bridge vulnerabilities
dc.subject.keywords flood planning
dc.subject.keywords infrastructure vulnerabilities
dc.subject.keywords Iowa highways
dc.subject.keywords precipitation change
dc.subject.keywords river flood basins
dc.subject.keywords roadway embankments
dc.subject.keywords severe rainfall events
dc.subject.keywords streamflow simulation
dc.title Iowa’s Bridge and Highway Climate Change and Extreme Weather Vulnerability Assessment Pilot
dc.type article
dc.type.genre report
dspace.entity.type Publication
relation.isOrgUnitOfPublication 0cffd73a-b46d-4816-85f3-0f6ab7d2beb8
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