The truck, which is a moving truck, caused quite a traffic backup at the heart of 5 p.m. rush hour.
It was coming from Houston and headed for Farmers Branch. The two men inside were able to scramble out of the cab safety.
"We're concerned about the runoff," said Battalion Chief Bret Stidham with Dallas Fire-Rescue. "The diesel, the oil, the runoff in the environment. Especially with the rain, it's gonna make it move quicker, so we're trying to keep it out of the storm sewer system."
Shortly before nightfall, a cable and a hoist were attached to the cab.
The whole process was complicated by overhead power lines, but by 7:40 p.m., the cab was pulled back up on the bridge.
One man who identified himself as Anthony said he was a passenger in the big rig.
He was treated at the scene for cuts on his hand and leg.
"Started hydroplaning," said Anthony. "You know what hydroplaning is…must be some oil on this freeway or something. I don't know. That's what it felt like."