Research Publications

Eight states have joined forces to test new materials for roads, bridges, and other structures.

New open data standards are helping state DOTs bring the benefits of digital delivery to bridge design and construction.

Discussing common winter maintenance issues and strategies and identifying potential ways to work together, helps streamline individual and collaborative efforts.

Researchers plan to develop a risk assessment tool that identifies the roadway segments at greatest risk after a given storm.

This project aims to quantify the impacts of different lane-width and shy-distance combinations.

This study provides new guidance on how to improve the effectiveness of a zipper merge strategy in work zones that require a lane closure.

This study explored how connected traffic control devices like arrow boards can help agencies deliver clear and accurate work zone information to motorists.

This joint effort studied real-world crashes and close calls involving advanced driver assistance features to better understand their impact.

This study explored how connected traffic control devices like arrow boards can help agencies deliver clear and accurate work zone information to motorists.

Biodegradable cornstarch hydrogel in concrete mixes may provide added strength and durability while offering protection against harsh freeze-thaw cycles

This project provides a breakdown of bridge deck overlay options considering service life, cost, road closure time, and the other trade-offs.

Evaluating the validity of proposed resistance factors for bridge foundations led to the development of updated design recommendations.

This project tests coarse aggregate to understand the properties that determine longevity.

This research evaluated the suitability of less expensive crowdsourced data for the purpose of supplying congestion updates.

This study developed standardized practices for work zones and temporary traffic control at new and innovative intersections.

New electrical resistivity technology enhances understanding of underground conditions at potentially lower cost.

This project improved the ConcreteWorks modeling tool to reflect Iowa’s commonly used slag-based concrete mixes.

To identify optimal design characteristics of rock check dams, investigators compared the performance of modified rock check dam installations to a standard installation.

Waste ash from power plants was analyzed as a substitute for cement in concrete mixtures to reduce carbon dioxide emissions and provide a better disposal method for the ash.

Since many Iowa bridges are replaced early due to evolving corridor needs, Iowa sought to align bridge design with service expectations.