Officials told KTRK that the 40-year-old Scot was in fair condition, but "awake and alert" at Memorial Hermann Hospital.
Franchitti's No. 10 car went airborne into the fence on Reliant Park's Turn 5 after a three-car crash involving E.J. Viso and Takuma Sato. Franchitti remained in the car while Viso and Sato walked away from the wreckage. Emergency personnel carried him off the track on a stretcher.
“I asked how he was doing, and he said, ‘Eh.’ His ankle is sore, and his back is sore, and he will be taken to the hospital. But he’s OK,” Chip Ganassi, Frachitti's team owner, told NBCSN.
"Thank you for the prayers for @dariofranchitti I have only clothes on my back & the dogs but that's all that we need & we are on our way," Ashley Judd, Franchitti's soon-to-be ex-wife, tweeted Sunday evening.
Though two of the 13 injured spectators were sent to local hospitals, the rest were treated at the scene.