It happened right after noon along the FM 1960 bridge over Lake Houston.
The Houston Fire Department says the two men were doing construction work on the embankment when they were struck by a piece of heavy machinery. They say somehow the portion of a crane known as the basket moved or shifted and hit them.
"During the construction, the work they were doing, they were pushed off and fell down about 10 feet to some rocks," Houston Fire Department Capt. Ruy Lozano said.
The men had to be rescued using the very crane that hit them. HFD crews used boats to load them into rescue baskets to be lifted to the bridge above.
At least one of the men was knocked unconscious, but both were transported to hospitals via LifeFlight. While the fire department tells us they suffered significant injuries, both are expected to survive.
A spokesperson with the Texas Department of Transportation says crews are in the middle of a $1.5 million project to limit erosion from the bridge's base down to the water.
The work actually is being performed by Millis Development and Construction, a company out of Sugar Land. A spokesperson for the company told us they're investigating what happened and cannot provide us with any details yet.