The more-than-20-foot "knuckleboom” crane was loading I-beams to build a sidewalk shed outside a Kmart near the entrance for the subway and Long Island Railroad when a hydraulic system failed while lifting high beams at 10:20 p.m., city officials said.
Fleetwood Mac was closing a show at nearby Madison Square Garden when the mishap occurred.
The crash spilled fluid into the street, requiring a Hazmat response, authorities said.
34th Street and 7th Avenue remained closed until 6:30 a.m. Tuesday.
Train service wasn’t affected, authorities said.
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