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Evaluation of the Use of IRI Data to Estimate Bridge Impact Factor

Project Details
STATUS

In-Progress

PROJECT NUMBER

21-757

START DATE

03/01/21

END DATE

02/28/22

FOCUS AREAS

Infrastructure

RESEARCH CENTERS InTrans, BEC
SPONSORS

Iowa Department of Transportation

Researchers
Principal Investigator
Katelyn Freeseman

Acting Director, BEC

Co-Principal Investigator
Brent Phares

Bridge Research Engineer, BEC

About the research

This is a continuation of a previous project, RB11-015: Investigation of the Effect of Speed on Dynamic ImpactFactor for Bridges with Different Entrance Conditions, which determined that the roughness at the entrance to bridges is a primary influence on general dynamic impact factors. This new project will take the information found in that project and attempt to correlate the International Roughness Index (IRI) data collected by the Iowa Department of Transportation (DOT) with the dynamic impact factor (DIF) used when analyzing bridges for heavy load permits. The goal of this project is to develop a method to estimate the DIF value for a large number of bridges that can be used by load rating engineers.

 

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