Demonstration of load rating capabilities through physical load testing : Johnson County bridge case study.

PDFTech ReportPart of InTrans Project 12-444SPR RB32-013Highway bridgesInspectionLoad testsLoad factorEconomic benefitsStatic loadsOverweight loadsBearing capacityCase studiesIowaIowa. Dept. of TransportationHosteng, TravisPhares, BrentBridge Engineering CenterUnited States. Federal Highway AdministrationSoy Transportation CoalitionNTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and StructuresNTL-HIGHWAY/ROAD TRANSPORTATION-Construction and MaintenanceUS Transportation CollectionThe objective of this work, Pilot Project - Demonstration of Capabilities and Benefits of Bridge Load Rating through Physical Testing, was to demonstrate the capabilities for load testing and rating bridges in Iowa, study the economic benefit of performing such testing, and perform outreach to local, state, and national engineers on the topic of bridge load testing and rating.This report documents one of three bridges inspected, load tested, and load rated as part of the project, the Johnson County Bridge (FHWA #205750), including testing procedures and performance of the bridge under static loading along with the calculated load rating from the field-calibrated analytical model. Two parallel reports document the testing and load rating of the Sioux County Bridge (FHWA #308730) and the Ida County Bridge (FHWA #186070). A tech brief provides overall information about the project