Background: Approximately twenty-five years ago, RIDOT stopped using granite curbing as a. standard, with the exception of bridge projects. The primary motivation was cost, as precast. concrete, the replacement, was cheaper to purchase and install.
Longest damage path and duration: The Tri-State Tornado. The longest recorded tornado journey in U.S. history was the Tri-State Tornado of 1925, which traveled almost 220 miles across southeastern Missouri, southern Illinois, and southwestern Indiana during its 3.5-hour life. The average tornado travels about 5 miles.
Tornadoes lash north central Illinois; 1 dead, damage widespread. A violent storm system that spawned at least two tornadoes killed two people and left a trail of damage on April 9, 2015, as it swept across a 50-mile swath of north-central Illinois, officials said. Live updates and full coverage.