KEYC - Reconstruction Of Amboy Bridge Will Make It Useable Once Again

Reconstruction Of Amboy Bridge Will Make It Useable Once Again

Reconstruction Of Amboy Bridge Will Make It Useable Once Again

Posted: Updated:
amboy, minn. - After the I–35 bridge collapse, an old truss bridge near Amboy was closed to traffic.

But residents found a way to save the now historic bridge and give it another 50 to 100 years of life.

Along County Road 147, sits an old bridge.

Almost 114 years of age, the historic structure looked to be reaching the end of its life.

Lisa Lindberg, the owner of Amboy Cottage Café, says, "It should be saved and we wanted to find out what protection it had because we know it had historic designation."

Alan Forsberg, the Blue Earth County Engineer, says, "The biggest problem was the abutments or foundation for the bridge. It sits on shallow–spread footings on the sand foundation and when you get a flood it washes the sand out from underneath the foundation."

And so a group of Amboy residents worked to have the bridge placed on the National Register of Historic Places, thus protecting it from certain demolition.

But to repair it took several rounds of proposals...

"...the concern was those heavy loads would overload the bridge and cause it to fail."

"We needed to work with the federal law dealing with historic structures."

...before finally reaching a solution.

"The historic truss would be picked up, set aside, new abutments would be built on new pilings so they won't be swept by erosion. Steel beams would span the river, the concrete deck would be placed on steel beams, and then the truss would be put back on top."

Which will allow the repaired bridge to support 80,000 lbs.

While retaining its historic status.

Lindberg says, "The reason to keep it there at this point and time is we have the way to transport heavy things. This will be a recreation bridge for small vehicles traffic and as long as the truss is there then the story can still be told."

The bridge's reconstruction will cost an estimated $1.15 million.