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St. Anthony Falls Bridge

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Identifikation

St. Anthony Falls Bridge
310013

Karte

Struktur allgemein

Brücke
existent [fertiggestellt]
Modern

Nutzung

KfZ-Verkehr

Fakten

  • This bridge replaces the Old I-35W/Mississippi River Bridge, which collapsed on August 1, 2007.
  • The bridge stretches 1,223 feet, with a 504 foot main span over the Mississippi River.
  • Segments of the main span were on the closed south approach to the bridge. Workers were protected from the elements by four 35-foot tall heating sheds, allowing the concrete to cure at the appropriate temperature.
  • On 25 May 2008, the first of 120 sections for the main span were lifted by "Big Ben", a massive mobile crane floating on a large river barge.
  • Four massive piers (two for each direction) standing 70 feet each support the main span. An observation deck connects to new parkland at the base of the piers on both riverbanks.
  • An additional set of piers are located at the north end of the bridge to support a final span over an existing railroad spur and future pedestrian and biking path.
  • Each direction is 90'-4" wide with five lanes of traffic. The bridge is also able to support tracks in the event of an expansion of light rail.
  • All piers and the north abutment are supported by drilled shaft foundations, with the south abutment supported by over 100 driven H-piles.
  • Construction took place 24 hours per day to meet a projected 24 December 2008 opening date.
  • The bridge was opened to traffic at 5 am on Thursday, September 18, 2008, more than three months ahead of schedule. The contractors were awarded a bonus of over $25 million for this early completion.
  • Despite a pledge to work 24 hours a day, the contractors sent workers home early at midnight Friday, 18 January 2008, as temperatures fell to -15 degrees F (-26 C). Work resumed the next day, even though the temperatures did not rise above 0 degrees F (-17 C).

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Mehr Informationen

Ort

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

Technische Daten

1.223,01 ft
189,00 ft
Nov 2007
Sep 2008
$234.000.000

Beteiligte Firmen


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