Four-time
Franchitti suffered a concussion, a spinal fracture, and a broken ankle. The spinal injury will not require surgery, however, Franchitti did undergo surgery for the broken ankle.
Of the 13 spectators injured, two were transported to a local hospital with what were described as "very minor" injuries according an IndyCar spokesperson. Here is a GIF of the ugly accident (via SBNation.com)...
Here is a look at the safety crew working to remove Franchitti from his car...
AP
And here is video of the crash...