Multiple mainlanes were blocked as crews worked to clear the freeway during the morning commute. All lanes reopened shortly before 9 a.m. ABC13 viewers called into the newsroom, saying several drivers had flat tires. Road debris dropped from a vehicle has multiple mainlanes of I-45 Gulf Freeway southbound at Griggs blocked. TxDOT crews are on scene to help clear the debris. pic.twitter.com/Vm5RdhU6Fz— TxDOT- HOU District (@TxDOTHouston) January 12, 2021 Major traffic incident on the Gulf Fwy outbound at Griggs. At least a dozen vehicles pulled over on the right shoulder due to reported road debris in the area. Use Telephone Road as an alternate route @abc13houston#ABC13#kattraffichttps://t.co/fhcEunRK9Spic.twitter.com/kJZy4TA6zQ— Katherine Whaley (@KatherineABC13) January 12, 2021