60-year-old man killed Monday after vehicle flies off Dallas High Five interchange

A 60-year-old man died Monday after his vehicle plunged off the side of the High Five interchange in Dallas.

What we know:

On Monday, November 9, at around 4 p.m., Dallas Police responded to a major accident at the intersection of US 75 and Midpark Road.

A preliminary investigation determined a two-vehicle crash occurred. SKY 4 captured images of a vehicle in a ditch near the High Five interchange.

The ramp from LBJ Freeway to northbound U.S. 75 was closed for a period of time as first responders were on scene.

The Dallas County Medical Examiner identified the driver as 60-year-old Juan Hernandez Paez Sr.

Dig deeper:

Video obtained by FOX 4 of the incident shows Paez Jr.'s vehicle falling off the side of US 75 and into the ditch near Midpark Road.

A pickup and a sedan can be seen pulling over, with three men looking over the barrier at the aftermath.

Paez Sr. was pronounced dead at the scene.

What we don't know:

Police have not released any details on what caused the crash.

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What they're saying:

Dr. Nur Yazdani, a civil engineering professor at UT Arlington, says the barriers on US 75 are built to withstand drivers traveling at the posted speed.

In the case of this crash, Paez Sr.'s vehicle is seen going over the barricade entirely. Yazdani says building taller barricades is doable, but would be expensive.

"We don't design for all kinds of crashes because of benefit cost. You know, if you have to make it very rigid, they're taking all kinds of impact, it is gonna cost a lot of money," Yazdani tells FOX 4's Lori Brown. 

"Like my own home, you for a tornado. If I design for a tornado, I have to spend much more money, but if I design a hurricane at a lower speed, it's much more cost-benefit-wise feasible."

What's next:

The surviving driver remained on scene with police, and no arrests have been made.

DPD says their investigation remains ongoing.

The Source: The information in this article comes from video obtained by FOX 4, the Dallas Police Department and the Dallas County Medical Examiner's Office.

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