Jeff Niemeyer, MoDOT area engineer, said Karrenbrock Construction’s work on the landslides on Highway U in southern Warren County is proceeding on schedule, and should be finished by their Nov. 6 deadline.
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Jeff Niemeyer, MoDOT area engineer, said Karrenbrock Construction’s work on the landslides on Highway U in southern Warren County is proceeding on schedule, and should be finished by their Nov. 6 deadline.
The road closed on May 9 when engineers noticed the roadside slipping. Shortly after the closure, three landslides removed significant portions of the road along with the adjoining hillside.
Karrenbrock Construction is currently repairing those landslides.
The $1.5 million contract awarded to Karrenbrock included a Nov. 6 deadline, with disincentives if completion was delayed past that point.
“It sounds like they’re right on schedule,” said Niemeyer.
He said their work includes adding layer by layer of road materials, first to rebuild the hillsides where the landslides occurred, then constructing “baskets” of steel rebar, which will be filled by concrete for the road.
On the two smaller landslides on the south side of the closure, the hill has been rebuilt and the baskets have been constructed. As of Oct. 11 all the work remaining there is to pour concrete, stripe the road and install a guardrail.
There is however, considerable work remaining on the larger landslide on the north side of the closure.
That landslide stretches for roughly 150 feet of the road and removed the width of the road for most of its length.
Niemeyer said they are roughly 80% finished with work on that larger slide.
“They dug out all the old unstable material down to bedrock and rebuilt the rock back up and made the slope gentler,” said Niemeyer.
From there they will construct another steel basket and pour concrete to repair the road before striping and adding guardrails to complete the project.
