“The Only Way to Go”

Helm Civil uses iMC technology to complete grinding project underwater No two jobsites are alike, but they usually have one thing in common: they are above water. That wasn’t the case for Helm Civil when it tackled a lock and dam rebuild for the Army Corps of Engineers on the Mississippi River in Rock Island, Ill. Lock and Dam 15 was built in 1931 on wood cribbing and wood piling. Over the years, consistent barge traffic caused the old foundation to fail on the lower guide wall that the barges use to come in and out of lock chamber.