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Work started to stabilize Leo Frigo (I-43) Bridge

October 11, 2013

Two towers being built to stabilize sagging deck.

The Wisconsin Department of Transportation is announcing work to stabilize the section of the Leo Frigo (I-43) Bridge where Pier 22 settled approximately 2 feet the morning of September 25. Work is set to begin Monday, October 14 and be completed by early November.

The general contractor is Lunda Construction Company, Black River Falls.

Two steel truss towers will be placed under the deck on both sides of and 55 feet away from Pier 22. They are designed to stabilize the bridge and keep the deck from further sagging. (View a PDF illustrating the location of the towers.) Cost is estimated at $1.57 million.

The department is also taking additional steps to enhance worker safety on the bridge site. Beginning next week, lateral supports are being installed at the top of piers 21, 22, 23 and 25. While no movement has been detected at any other piers, this precautionary measure will keep the piers vertical even if they settle in a manner similar to Pier 22.  (View a PDF illustrating these supports.) This temporary measure will be removed once the pier foundations are permanently repaired.


WisDOT is continuing its investigation on the condition of the other bridge piers. This work will continue through the weekend and into next week. The department will also be conducting soil borings for the piers located in and adjacent to the Fox River, in keeping with the plan for a thorough investigation.

Video of the stabilizing work will be made available by WisDOT to the media after the work begins next week.

Note: Find more information on the bridge on the WisDOT web site.

For more information, contact:
Communications Manager Kim Rudat, WisDOT NE Region
(920) 492-5743,



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