Yes, 16 workers died during construction of the Sydney Harbour Bridge (1924-1932).
The project employed ~1,400 workers at peak. Construction involved unprecedented challenges:
Safety nets, harnesses, and protocols were implemented but were primitive compared to today. The fatality rate (~1.1%) was actually low for major bridge projects of that era (Golden Gate Bridge: 11 deaths, ~1.7%; Brooklyn Bridge: ~27 deaths).
A plaque on the bridge honors the fallen workers. Their sacrifice is commemorated annually. The bridge opened in 1932 and remains an engineering icon and Sydney's defining landmark.