From other sources...

Truck was USPS hauler full of mail. Driver was a USPS employee. Got cut off by a car on the bridge. Hit the car, swerved and went over the wall. Split a fuel tank. Car he hit was towed away and the driver is being questioned.

Heck of a mess.

https://www.wfaa.com/video/news/loc...287-a11ace84-f07b-4802-a113-033afe42931f

If the results don't match the theory, change the theory.