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.
Missouri is also home to the most destructive tornado in U.S. history. The Tri-State tornado, which set down on March 18, 1925, killed 695 people, injured 2027 people, and demolished an estimated 15,000 homes throughout Missouri, Illinois and Indiana. Annapolis, Missouri, was 90 percent destroyed.