Work to Repair the Sinkhole is in Progress

February 28, 2012

The specialty box has been delivered and work has begun to fix the sinkhole at North Court and Spanish Oak. Please be advised that North Court Street, just south of Spanish Oak, is closed this week for replacement of the storm drain pipe. The road should reopen by close of business on Friday, March 2nd. Detours will be either Upper Kingston to Live Oak or Martin Luther King to Wilberforce.

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The sinkhole was caused by the deterioration of a corrugated metal pipe under Court Street. The metal pipe is deteriorated by the constant flow of water over the life of the pipe. This water carries sediment and sand which, when moved by the water, are abrasive and cut into the pipe material. Eventually, as is the case here, the bottom of the pipe fails completely and the loss of soil around the pipe begins. When it rains, the soil above the pipe falls into the failed pipe and causes a cavity or void above the pipe. When this void becomes large enough and the weight of the overlying soil is heavy enough, the overlying soil caves in. The caving in of the soil leaves the appearance of a sink hole. Once the sink hole has made it to the surface, rain causes the soil to enter the failed pipe easily and maintenance becomes a constant necessity. The solution to this sink hole is to replace the old, failing corrugated metal pipe. The pipe will be replaced with reinforced concrete pipe which has a useful life expectancy of 50 or more years.

This project will cost $48,601.00.

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