Orange barrels on a highway


Minnesota's Cold Weather Road Research Facility

Home | Test Cells | Data & Instrumentation | Projects | Reports | About Us | Contact Us

The Effects of Implements of Husbandry "Farm Equipment" on Pavement Performance


Within the past few decades, there has been significant change in both farm size andImplement of Husbandry

farm equipment. This change in size combined with regulatory emphasis encouraging

farmers to store manure as a liquid and apply it in a short time frame, has caused the

farm equipment industry to respond with the shift in production towards larger and

heavier manure hauling and application equipment. This shift has occurred at a faster

rate than both pavement design technology and the state regulatory precautions have

been able to moniter and test. Innovations such as steer able axles, flotation tires, and

tire design changes are not reflected in state DOT regulations. This has forced the

adoption of equipment and practices that, while complying with the letter of the law, can

create excessive and expensive pavement damage.

The regional aspect of this project is a major selling point. Many states in the Upper Midwest have the same concerns about heavy farm equipment, and the pooled fund study framework allows for these states to combine their resources and research on common issues. This project will study the current version of a number of vehicles to attempt to create an average basis of conclusion for the effects of Implements of Husbandry. The basic framework, capabilities and knowledge for

this research might be of interest to other industries in the future such as tire manufacturers, logging trucks, mining vehicles, forage harvesting equipment, and other heavy farm equipment to stay in accordance with state and national regulations.


Previous research on farm equipment has been conducted in Minnesota, Iowa and

South Dakota yielding valuable information.

The objectives of this study are to determine the pavement response under various types of

agricultural equipment (including the impacts of different tires and additional axles) and

to compare this response to that under a typical 5-axle semi tractor-trailer. This was

accomplished by constructing new instrumented test sections at MnROAD and retrofitting

instrumentation into two existing concrete test sections.


Work Plan


Reports and Publications




Pooled Fund Study Website