Culvert washout needs hundreds of tons of rock

Officials cordoned off a large area more than a month ago when the hole was noticed around a box culvert that carries storm water to the Mississippi River.

In this July 13, 2012, photo, the Memphis Queen riverboat moves up the Mississippi River, in Memphis, Tenn. (AP Photo/Nikki Boertman)

MEMPHIS, Tenn. (AP) -- Hundreds of tons of rock and concrete will be needed to fill a sinkhole that developed at Tom Lee Park on the Memphis riverfront.

Officials cordoned off a large area more than a month ago when the hole was noticed around a box culvert that carries storm water to the Mississippi River.

An official of the development corporation that manages the city park told The Commercial Appeal that ground-penetrating radar revealed a large underground void where water has washed away soil.

Fixing it will require building a temporary road and dumping up 200 tons of rock into the hole, then pouring more than 100 truckloads of concrete around the ruptured box culvert.


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