Sensors installed on sinking Green Bay bridge

CREATED Sep. 30, 2013

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  • Image by Wisconsin DOT

  • Barriers block access to the Leo Frigo Bridge in Green Bay after a large dip was discovered in the roadway. Image by Brian Miller

  • Side view of the Leo Frigo Bridge, closed after inspectors discovered a large dip across the roadway. Image by Brian Milller

  • Leo Frigo Bridge is closed after police discovered a large dip across all lanes of the roadway. Image by WI Department of Transportation

  • Traffic is halted on the Leo Frigo Bridge in Green Bay. Drivers are being detoured to HWY 172 and HWY 41 as inspectors determine what caused a large dip across the roadway. Image by WI Department of Transportation

  • Traffic is shut down on the Leo Frigo Bridge (Tower Drive) in Green Bay. The WIsconsin DOT is inspecting the surface after discovering a dip in the roadway. 9/25/13. Image by Wisconsin Department of Transportation

GREEN BAY - The Wisconsin Department of Transportation is still trying to figure out why a bridge in Green Bay sank more than three feet last week.

Sensors were installed over the weekend on top of three piers. The sensors will detect if there's any more movement and will set off an alarm to warn workers below.

Governor Walker declared an emergency for the bridge on Friday. The declaration could lead to federal money to help with repairs.