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.
The Tri-State Tornado is the deadliest twister in U.S. history, lasting for 3.5 hours in 1925 and killing 695 people in Missouri, Illinois, and Indiana. That makes it an outlier: the second most deadly tornado in history, the Great Natchez Tornado, killed 317 people in 1840.