4-mile Rochford Road overlay project to require extra $130-$150K

September 25, 2018

DEADWOOD — A bump in the road occurred when contractors began working on the county’s largest road project of the season, a $871,574 Rochford Road overlay project.

Lawrence County Highway Superintendent Allan Bonnema referred to that bump in the road as “one hell of a change order.”

“The contractor started after Labor Day. This project involved going down there, milling two inches off the existing surface and putting three inches back on when we’re done,” explained Bonnema to the county commission Tuesday. “The problem with it was, we got down there and got started, and, the two inches, there were places on the road we went through the existing surface.”

That’s down to the gravel.

“It’s been overlayed twice since it’s been a paved road. I was told three inch the first time and two inch the second time – thickness,” Bonnema said. “We figured we had four- to five-inches on there.”

Bonnema said that in some places the road was not even thick enough to support the weight of the trucks hauling off the millings.

In response to the findings and added expense, the contractor has performed full-depth reclamation, drilling down into the pavement, into the base, and performing patch work. These items were not part of the original bid, let in February.

Of the four-mile long project, Bonnema said that two miles had inadequate pavement thickness and will require four inches of pavement laid.

“This is a road that does carry a lot of logging trucks, and we saw that in this road,” Bonnema said.

Bonnema estimated that around $10,000 in unexpected work had already been performed.

“In the curved areas and some of those areas, the pavement was just not there and that’s why it was failing,” he added.

Commissioner Brandon Flanagan asked how much more of an expense the county would incur.

“You really want to hear it?” Bonnema asked.

He calculated it could be up to $150,000.

“I’m not sure that we have a lot of choice,” Flanagan said. “You open up that can of worms, you gotta’ put it back the right way, not just the patched way.”

Commissioner Randy Deibert asked if the project would still be on schedule with the changes and suggested core sampling for future projects of this nature.

Bonnema said the contractor indicated they could still stay on schedule.

Lawrence County Deputy State’s Attorney Bruce Outka asked if the contractor would submit a change order.

The funds will come from extra funds in the highway road and bridge fund.

The commission unanimously approved Bonnema moving forward with the larger overlay and will look for the change order in the coming weeks.

“I would like to do it right, the best way possible and this is the only scenario I can think of,” Bonnema said.

The project is four miles in length and runs from the Pennington County line going up to Custer Crossing and the completion deadline is Oct. 1. The engineer’s estimate on the project was $934,582.50. Bonnema budgeted the project at $887,105.

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