Impact of Legalized 25-kip Axle Loads for Self-Propelled Implements of Husbandry on Iowa Bridges
Recent legislation in the State of Iowa has increased the allowable axle weight of certain implements of husbandry to 25 kips. This change poses a particular concern to those who oversee and manage the construction and preservation of bridge structures. Based upon initial estimates, it is expected that the resulting structural response of bridges will exceed that which would be otherwise seen from current legal loads. This project aims to identify the load response of Iowa bridges to the increased live load limit and develop recommendations for load factors, live load distribution factors, and impact factors for Iowa bridges. Additionally, an Iowa-specific notional vehicle to be used for load rating bridges for recently legislated 25 kip axle vehicles will be developed and proposed.
Language
- English
Project
- Status: Active
- Funding: $239231
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Contract Numbers:
SPR-RE22(009)-8H-00
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Sponsor Organizations:
Iowa Department of Transportation
800 Lincoln Way
Ames, IA United States 50010 -
Managing Organizations:
Iowa Department of Transportation
800 Lincoln Way
Ames, IA United States 50010 -
Project Managers:
Clute, Khyle
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Performing Organizations:
Center for Transportation Research and Education
2711 South Loop Drive, Suite 4700
Ames, IA United States 50010-8664 -
Principal Investigators:
Dahlberg, Justin
Phares, Brent
- Start Date: 20211101
- Expected Completion Date: 20240430
- Actual Completion Date: 0
Subject/Index Terms
- TRT Terms: Agricultural equipment; Axle loads; Bridges; Load limits; Overweight loads
- Geographic Terms: Iowa
- Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;
Filing Info
- Accession Number: 01910242
- Record Type: Research project
- Source Agency: Iowa Department of Transportation
- Contract Numbers: SPR-RE22(009)-8H-00
- Files: RIP, STATEDOT
- Created Date: Feb 27 2024 7:17PM