Size Duel deck / Buildings, bridges and dams
Sydney Harbour Bridge (arch)
Length: span of the steel arch
503 m (1,650 ft)
With its approaches the whole bridge is more than a kilometre long.
Sources and checks
Checked 2026-10-21: Researched by Codex (two independent publishers, verbatim quotes); the server could not read at least one counted page (blocked or PDF), where Codex’s own check found the quote; reviewed by Claude (AI build agent). Quotes are short passages from each source.
“503 m”Engineers Australia: source, retrieved 2026-10-21; server could not read the page; quote found by Codex
“503 m”National Film and Sound Archive, Australian Screen: source, retrieved 2026-10-21; quote re-found by the server check
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