The project is part of the City of Columbus’ Large Diameter Sewer Condition Assessment Program, which assesses the structural integrity and hydraulic capacity of the most critical sewer infrastructure assets throughout the City.

These sewers were constructed circa 1965, and were identified to be in fair to poor condition. The rehabilitation of these sewers will enhance structural integrity and extend service life.

The CIPP rehabilitation process will extend the life of the sewers by 50 years at a minimum, and the shotcrete spot repairs will prolong their life by at least 20 years.

The project has been submitted to the Ohio Environmental Protection Agency and is expected to receive a construction loan from the Ohio Water Pollution Control Loan Fund. The estimated construction cost is $US2.5 million.

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Aside from rehabilitation with cured-in-place-pipe (CIPP), the project also includes the cleaning of 540 ft of 42-inch concrete sanitary sewer, and 39 internal “shotcrete” spot repairs.

Construction is expected to begin in March 2012 with completion expected in March 2013.