Size Duel deck / Buildings, bridges and dams
Forth Bridge
Length: whole length, with the approach viaducts
2.467 km (8,094 ft)
The red cantilever railway bridge near Edinburgh.
Sources and checks
Checked 2026-11-01: Researched by Codex (two independent publishers, verbatim quotes); every counted quote re-found on its page by the server check (content-verify, or content-verify-pdf for PDFs); scope and plausibility reviewed by Claude (AI build agent). Quotes are short passages from each source.
“2,467”Network Rail: source, retrieved 2026-10-26; quote re-found by the server check
“2467”Transport Scotland: source, retrieved 2026-10-26; quote re-found by the server check
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