An 18-wheeler that was carrying heavy equipment lost its load and caused traffic backups overnight on Interstate 820 at Old Decatur Road in north Fort Worth, officials said.
The truck was carrying two excavators on a flatbed when the truck struck the Old Decatur Road overpass at about 8:30 p.m., fire officials said.
The excavators broke loose from their straps and fell onto the highway.
It was not immediately clear if anyone was injured, fire officials said.
Lanes were closed overnight but have since been reopened.
No other information was available.