Permanent claim record · Mackinac Bridge
Construction of the Mackinac Bridge took 42 months beginning May 7, 1954; it opened November 1, 1957, and is nicknamed 'Mighty Mac' or 'Big Mac.'
| Predicate | trivia.fact |
|---|---|
| Subject | Mackinac Bridge (venue) |
| As of | |
| Status | Verified |
| Source | Famous Michiganders, Pop Culture & Trivia Report — Perplexity Deep Research (2026) (trust 6.5/10) |
| Reference | — |
| Document hash | pending evidence-pack link |
| Provenance chain | |
| Claim ID | 2fbed583-3a83-405f-a0dc-6eac3d9c5e3f |