Roadway safety is a growing concern in the United States. In 2019 alone, there were 36,096 traffic fatalities, an increase of 5.3% from the year before, according to a recent study conducted by the National Highway Safety Administration (NHTSA).1 Every year, thousands of Americans are injured or killed in preventable accidents, many of them due to distracted driving. Fortunately, the recently enacted Infrastructure Investment and Jobs Act (IIJA), includes several provisions that can make America’s roads safer.
“This research helps to confirm the direction the department has taken with recent changes to longitudinal joint specifications.”– Project Manager Dan Kopacz, WisDOT
How to Create Better Longitudinal Joints?
The longitudinal joint is the Achilles’ heel of every paved road. Road managers know the first part of the pavement to fail is the longitudinal joint. As the road’s most permeable part, this joint is susceptible to the elements, especially with their inherently lower density. Air and water work down through this unavoidable seam in the pavement causing the joint to deteriorate, crack, and pothole. And when the longitudinal joint fails, the rest of the road soon follows — triggering the need for even more maintenance and costly repairs.