CHERRY HILLS VILLAGE, Colo. - Police are investigating whether a medical condition caused a semi-truck driver to careen through a Cherry Hills Village intersection, causing a 13-vehicle crash that injured four people on Monday afternoon.
Police said the white big rig hauling a long flatbed trailer was traveling westbound on Highway 285/Hampden bypass at about 3:30 p.m. when it failed to stop at South Clarkson Street, plowing into the back of the westbound cars parked at that intersection.
The big-rig kept rolling, knocking down a power pole until it came to rest on the front lawn of the Off Broadway Flats apartment building. The truck's hood was flipped up and smoking was pouring from the engine compartment.
Witness Emily Pond, who provided several photos of the wreckage, told 7NEWS a runaway semi-truck caused the massive crash.
"When my car got jostled, I was almost like -- it was a joke -- like, 'Who's pushing me,' but then I looked over and there's a big, giant truck cab rolling, just barreling through the intersection, and I was like, 'Oh, this is really happening,'" accident victim Thomas Ogans told 7NEWS.
"And then as that happens, a bunch of glass hits me in the face," Ogans said. "Glass everywhere, sparks was flying, it was just like out of a movie. I was scared out of my mind."
Englewood police said four people were transported to the hospital with non-life-threatening injuries. Swedish Medical Center is a block north of the crash scene.
Police said they are investigating whether the trucker had some sort of issue, including a medical condition.
AirTracker7's camera showed five cars mashed in a cluster and four other damaged vehicles at the intersection of Hampden bypass/Jefferson Ave. and Clarkson. Several fire engines and police cars were on scene.
"The light was red. We were all waiting for the light to turn green," said Ogans. "This is a miracle right here, to have this much damage and this much carnage and these many cars and the crumbled mess that they're in and nobody is even really seriously hurt? It's a miracle."
"Sounded like they demolished a building," said neighbor Paula Farr.
Farr was walking home to her apartment when the crash happened. The semi stopped just feet from her unit.
"I can look out my window and see in the cab," said Farr.
The semi-truck is from Winslow Crane Service Co., based in Englewood.
"I don't have any information at this time," a woman answering the phone at the company told 7NEWS.
Winslow Crane Service Co.'s website said the 60-year-old firm is "one of the most respected mobile crane providers in the Rocky Mountain region. Winslow is recognized for steadfast commitment to your needs and a focus on safety that help turn ideas into projects and projects into landmarks."
Around 8 p.m., a Winslow crane lifted the Winslow semi off the lawn and onto a flatbed truck.
"To see a whole truck cab that's all torn apart and everything being lifted this far from my window ... I'm thinking don't let it blow this way," said Farr.
The wreck caused major backups in the area. Hampden bypass was shut down in the area for about five hours.