It happened around 6 p.m. near 29th Street and Hunting Park Avenue.
Chopper 6 was over the scene as the flooded water nearly consumed at least two vehicles. The occupants of those vehicles have been rescued.
Officials say roughly seven U-Haul employees are reportedly trapped inside a nearby building.
There was no immediate word on what caused the break.
Stay with Action News as we continue to follow this developing story.
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