Correct! Lol, no.

Real! During an extended winter cold snap a hardened crust of ice can accumulate over parts of the falls — American Falls in particular — creating an amazing, naturally-formed ice sculpture that has been known to reach a thickness of 50 feet. Historically, when this blanket of ice has spanned the entire Niagara River, the phenomenon has been known as the "ice bridge." Just as you see in the photos, people used to stroll and frolic on and around the frozen falls and even walk across the ice bridge, though no one has been allowed to do the latter since 1912, when the bridge unexpectedly broke apart and three tourists died.