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November 16, 2021

Top Stories

CP Tech Center publishes update to Guide to Concrete Overlays

Since 2007, the National Concrete Pavement Technology Center (CP Tech Center) has published the Guide to Concrete Overlays to present to pavement engineers the basic principles needed to design and construct concrete overlays on existing asphalt, composite, and concrete pavements. The CP Tech Center recently released the fourth edition of this guide.
Photo: Unbonded concrete overlay on Missouri Route D
The Guide to Concrete Overlays (Fourth Edition) provides updates that include current information on continuously reinforced concrete pavement overlays, geotextile separation layers, fiber reinforcement, design procedures, and lessons learned from the experiences of numerous state highway agency engineers. More

Aurora Program research projects consider optimal RWIS density and location

A series of research projects to determine the optimal quantity and placement of road weather information systems (RWISs) led by Tae J. Kwon, an assistant professor at the University of Alberta, has recently concluded.
Chart: Confusion matrix
The Aurora Program-sponsored Phase III project developed a systematic, yet transferrable, method for estimating key road surface condition variables between RWIS stations using large-scale data and advanced modeling techniques such as Geostatistics for spatial inference and mapping and Deep Learning for image recognition. More

Iowa Build a Better Mousetrap Winners named

The Iowa Local Technical Assistance Program (LTAP) recognized the 2021 Iowa Build a Better Mousetrap (BABM) winners at the Iowa County Engineers Association (ICEA) Mid-Year Conference in July. Jones County won for its stone placement apparatus, and Crawford County earned second place for its excavator bucket extension. Each year, the BABM contest spotlights public works departments that have best solved a common problem with an inventive idea.
Photo: Jones County’s stone placement apparatus
During the National Local & Tribal Technical Assistance Program Association (NLTAPA) summer conference in July, the Federal Highway Administration (FHWA) announced that Jones County’s invention had won the national BABM competition in the Innovative Project category. Crawford County earned the honorable mention in the same category. More

CP Tech Center’s founding director earns recognition

Photo: Dale Harrington
Dale Harrington’s more than 50 years in the transportation engineering industry received recognition in the form of an honorary membership in the International Society for Concrete Pavements (ISCP) during the organization’s quadrennial conference (held virtually this year).
Honorary membership is given to “individuals that have provided exemplary service to the Society and/or to the improvement of concrete pavement technology,” per the organization. More

News Briefs

CTRE hosts Traffic and Safety Research and Outreach Focus Group See Story
Nobel Prize winner visits InTrans See Story
CP Tech Center’s John Adam named associate director See Story
InTrans joins CCEE 150th celebration See Story

Recent InTrans Research

October 2021

Field Testing of Non-Motorized Road User Accommodations for Work Zones Oct 2021
Use of Innovative Technology to Deter Bat Bridge Use Prior to and During Construction Oct 2021
Data Driven Identification of Candidates for Operational Improvement Oct 2021
Experimental Validation of a Rapid Assessment Tool for Pile Capacity and Stability in Response to Scour Situations Oct 2021

September 2021

Evaluation of the Performance of a Short-Span T-Beam Bridge Sep 2021
Fatigue Evaluation of Reinforced and Unreinforced Hand Holes in High-Mast Lighting Towers Sep 2021
Development of Non-Proprietary Ultra-High Performance Concrete (UHPC) for Iowa Bridges Sep 2021

August 2021

Validation of Gyratory Mix Design in Iowa: Phase II Aug 2021
Covid-19 Impacts on Speed and Safety for Rural Roads and Work Zones Aug 2021
Design of Micro-Surfacing and Chip Sealing Mixes with RAP for Local Roadway Applications Aug 2021
Optimal RWIS Sensor Density and Location: Phase III Aug 2021

July 2021

Investigation of the Efficacy of Helical Pile Foundation Implementation in Accelerated Bridge Construction Projects: Phase I Jul 2021
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From traffic safety to big data and from preservation to education, InTrans focuses on research and service that impact transportation now and into the future.

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