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Contaminated soil will delay work on Highway 35 near Superior

Contaminated soil will delay the completion of a construction project on Wisconsin Highway 35 south of Superior. A section of the highway has been closed since June as the crews remove and replace the Stony Brook box culvert, and repair erosion c...

Contaminated soil will delay the completion of a construction project on Wisconsin Highway 35 south of Superior.

A section of the highway has been closed since June as the crews remove and replace the Stony Brook box culvert, and repair erosion caused by high water in 2012 under the Nemadji River bridge.

During the excavation process, a contractor discovered soil contaminated by petroleum in old roadway fill, the Wisconsin Department of Transportation reported Wednesday.

WisDOT determined after testing that the contaminated soil must be removed from the project site and disposed of at an industrial waste facility. As a result, contractors have to replace a large volume of material; the removal and replacement of the contaminated soil will add several weeks to the project.

The project originally was slated to be completed by the end of August, but the revised timeline now sets a completion date of Oct. 2, WisDOT said.

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While the work is underway, southbound traffic is being detoured using Douglas County Highway C east to Highway A, then south on Highway A to Highway B, then west on Highway B back to HIghway 35. Northbound traffic follows the same route in reverse.

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