Iowa’s aggregate roads are designed to keep rural communities connected and support the state’s farming economy. But freezing and thawing temperatures and use by heavy equipment can quickly damage the roads, requiring costly repair and maintenance every year.
To make these roads more durable and longer-lasting, the Iowa Highway Research Board initiated a research project to test 13 different construction and maintenance techniques under real-world conditions for two years. The results give engineers in Iowa’s 99 counties greater flexibility when it comes to building these important roads and keeping them in good working condition.
Learn more about this project in Iowa DOT’s new research brief, and check out other Iowa DOT research efforts on the News & Publications page.
Delivering targeted solutions for Iowa's transportation future.
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