Collapsed sewer line under Chickasha street to be replaced

 Southwest Ledger

By Mike W. Ray

March 25, 2025

The Chickasha Municipal Authority will spend nearly half a million dollars to replace 152 feet of a sewer line on Colorado Avenue that collapsed beneath 4th Street.

The sanitary sewer main “has failed and has been a continuous operational and maintenance problem,” wrote R. Scott Vaughn, the city’s consulting engineer. “This has been an ongoing problem that is affecting travel on 4th Street,” which is US277 through town.

Average daily traffic volume on 4th Street in 2023 was 10,500 vehicles between Colorado and Kansas avenues, and 14,100 vehicles between Minnesota and Dakota avenues, according to the Oklahoma Department of Transportation.

“We hope the contractor can mobilize by the end of the mon th and begin the dewatering process,” City Manager Jim Crosby said. It is expected to take at least a week for the groundwater in that area to be pumped out and for the ground to dry, he said.

Then four new manholes will be installed, and a large hole will be bored under 4th Street for installation of the new PVC line inserted inside steel casing and on a new alignment.

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