It happened in the Merchants Square shopping center in the 4400 block of Governor Printz Boulevard in Edgemoor around 10:30 a.m.
Authorities say a man, believed to be 19 years old, fell 20 feet from a girder.
He was taken to the hospital by state police helicopter.
There was no immediate word on his condition.
----------
Send a breaking news alert
Report a correction or typo
Learn more about the 6abc apps