Highway 87 closed down Thursday morning after a car, driving in the wrong lane, collided with a Safeway semi-truck.
The truck was the second of two grocery delivery trucks heading south-bound at 1:15 a.m. Thursday morning.
The male driver of a 2006 Toyota van "just missed" the first truck and collided with the second, said Department of Public Safety officer Frank Padgett. The collision left the van "unrecognizable."
The van driver was transported to Scottsdale for treatment of injuries and remains in critical condition as of Thursday afternoon.
It has not been determined whether alcohol was a factor in the accident. Results from the driver's blood analysis were yet to be determined at press time.
"If he comes back with any kind of alcohol in his system, then he will be charged with aggravated driving under the influence," Padgett said.
In addition to that charge, the driver may be charged with endangerment and driving the wrong way.
The accident occurred in the vicinity of mile post 238.6 at 1:15 a.m.
The truck driver was uninjured.
The accident shut Highway 87 down completely until 2:50 a.m. while Arizona Department of Transportation workers cleaned up the fuel spill that resulted from the accident, said B.J. Fletcher, a highway maintenance lead for ADOT.