Mackinac Bridge

Mackinac Bridge
Il Mackinac Bridge visto da sud.
Localizzazione
StatoStati Uniti (bandiera) Stati Uniti
CittàSt. Ignace
AttraversaStretto di Mackinac
Coordinate45°48′57.6″N 84°43′37.2″W
Dati tecnici
Tipoponte sospeso
Materialeacciaio
Lunghezza8 038 m
Luce max.1 158 m
Altezza luce47 m
Larghezza20,7 m
Altezza168 m
Carreggiate4 (due per senso di marcia)
Realizzazione
ProgettistaDavid B. Steinman
Ing. strutturaleDavid B. Steinman
Costruzione1954-1957
Inaugurazione1º novembre 1957
Mappa di localizzazione
Map
Modifica dati su Wikidata · Manuale

Il Mackinac Bridge è un ponte sospeso che attraversa lo Stretto di Mackinac e collega le due penisole inferiore e superiore dello stato del Michigan, negli Stati Uniti d'America.

Ha una lunghezza totale di 8 038 m, con una luce massima centrale di 1 158 m. L'altezza dei piloni è di 168 m dal livello dell'acqua. Inaugurato nel 1957, è il 13° ponte sospeso più lungo del mondo ed il più lungo dell'emisfero occidentale considerando la distanza tra le due rive.

È percorso dalla Interstate 75 ed ha quattro corsie (due per ogni senso di marcia). Il transito è a pedaggio, con un costo di 4 dollari per vettura e di 5 dollari per ogni asse per le roulotte e i veicoli commerciali. È percorso giornalmente da circa 11 600 veicoli.

Progettato dall'ingegnere statunitense David B. Steinman, i lavori di costruzione iniziarono nel maggio del 1954 e terminarono nell'ottobre del 1957. Fu inaugurato ufficialmente il 1º novembre 1957.[1]

Note

  1. ^ History of the Bridge, su mackinacbridge.org. URL consultato il 24 gennaio 2015 (archiviato dall'url originale il 18 gennaio 2015).

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