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Old I-35W/Mississippi River Bridge

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Identifikation

Old I-35W/Mississippi River Bridge
Minnesota Bridge 9340; Squirt Bridge; St. Anthony Bridge
304997

Karte

Struktur allgemein

Brücke
abgerissen [zerstört]
Modern

Nutzung

KfZ-Verkehr

Fakten

  • The bridge suffered a catastrophic collapse, 1 August 2007, 6:05pm local time. Thirteen were killed, twelve in vehicles, and one construction worker.
  • At the time of its collapse, it was the second busiest Mississippi River crossing in Minnesota, carrying on average 141,000 vehicles per day. Only the Interstate 94 bridge 2 miles downstream was busier.
  • The suspect gusset plates were just 1/2 inch in thickness, when 1 inch is the minimum required width.
  • The structural type was Steel Arch Deck Truss.
  • Demolition commenced immediately after all victims were recovered, with all bridge components removed from the river by the last week of September 2007.
  • The last victim was recovered from the site on August 20, 2007.
  • The design for the replacement St. Anthony Falls Bridge was selected by September 2007, with construction beginning in November 2007.
  • An initial report released by the National Transportation Safety Board on 15 January 2008 found a major design flaw in 16 of 224 gusset plates used to hold together steel beams.
  • The bridge rose 64 feet above the river and supported 8 traffic lanes, four in each direction.
  • The bridge was constructed with a single 458 feet steel arch in order to avoid constructing piers in the water.

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Mehr Informationen

Ort

Spanning the Mississippi River along Interstate 35W
Marcy Holmes
University
Minneapolis
Minnesota
U.S.A.

Technische Daten

581,26 m
34,54 m
1964
1967
2007
$5.269.002

Beteiligte Firmen


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