A Wednesday morning collision between a truck and one or more vehicles on eastbound I-580 near the North Flynn Road exit blocked commuters in both directions, and sent the tractor-trailer sliding down the mountainside, according to a motorist.
The witness, who was traveling west on I-580 at about 9:40 a.m., said traffic was halted on both sides of the freeway as rescue vehicles attempted to reach what appeared to be an accident involving a semi and one or more vehicles.
The individual said the big-rig, pulled over on the I-580 shoulder, then began sliding off the freeway in a moment so "dramatic" that the stopped motorists could only stare in disbelief as the incident unfolded.
"It looked like a toy," the person said. "It was amazing to see that giant truck on the side of the mountain and how far it had gone down."
CHP officials could not be reached to confirm the accident details.