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.
Tri-State Tornado of 1925. Written By: Tri-State Tornado of 1925, also called Great Tri-State Tornado, tornado, the deadliest in U.S. history, that traveled from southeastern Missouri through southern Illinois and into southwestern Indiana on March 18, 1925. The storm completely destroyed a number of towns and caused 695 deaths. 1  The tornado materialized about 1:00 pm local time in Ellington, Missouri. 2  With winds of roughly 300 miles (480 km) per hour, the tornado lasted 3.5 hours and traveled 219 miles (352 km)âsetting records for both duration and distance.