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.
That tragic honour goes to the so-called Great Tri-State Tornado, which, on 18 March 1925, roared across south-east Missouri, southern Illinois and south-west Indiana, devouring all in its path. Starting at about 1pm northwest of Ellington, Missouri, the tornado finally dissipated near Princeton, Indiana, some three and a half hours and 220 miles later.