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Replacement of Center Street bridges still in the works

Cost estimates being sought for structures north of town

December 29, 2012
By ANDREW POTTER - Staff Writer ( , Times-Republican

It will no doubt come with a hefty price tag, but Marshall County leaders are continuing to investigate the future replacement of the four bridges on Center Street just north of Marshalltown.

The series of bridges have been deteriorating in recent years and an estimated cost earlier this year was at $5 million to replace all of them. All of the bridges are at least 60 years old and one is 92 years old.

"We're still looking to have an evaluation of it and to see what the cost is going to be," said Denny Grabenbauer, chair of the Marshall County Board of Supervisors.

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This bridge is one of a set of four on Center Street north of Marshalltown in need of replacement in the next several years.

There is no safety risk now with the bridges, but more years of wear and tear could lead to problems.

"They are old bridges and just something we need to stay on top of," said Supervisors Chair Denny Grabenbauer. "We're being proactive and looking to the future."

County Engineer Paul Geilenfeldt said there is good news and bad news lately with the project. It appears they will be able to use the existing road grade, which is the good news. The bad news is the area still could flood in the future.

"We will have structures that serve us well for the future, but making that section of Center Street immune to flooding is likely impossible," Geilenfeldt said. "It will be a major improvement, but there will always be that future storm that exceeds the flow that we have designed for."

The county will continue in 2013 to look for sources of funding for the project.



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