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.
Map showing weather situation and storm track of Tri-State Tornado. Black line is tornado track. The Tri-State Tornado was the longest-lived and had the longest path of any recorded tornado. It traveled over 300 miles from SE Missouri to Indiana and killed over 600.