Interstate 45, Texas: September 2005
With Hurricane Rita approaching Houston, residents were told to evacuate on September 21, 2005, with as many as 2.5 million of them creating a massive 100-mile queue on Interstate 45. The congestion reportedly lasted for as much as 48 hours, leaving motorists stranded for as long as 24 hours along the 300-mile route from Galveston to Dallas. Though oppressive, the mass evacuation likely saved many lives.