Cincinnati’s Dry Run and Columbus’ Largest Project to Improve Sewer Tunnel

Columbus is building an underground storm sewer tunnel which will be the largest public works project in the city’s history. The 4-mile long storm water sewer tunnel is 175 feet under the city and is nearly complete with 3,000 feet to go. At 5-feet an hour, the massive 95-ton drill is doing its best to churn through miles of limestone. The city’s combined storm water and sewer system have become overloaded during heavy rains. The sewer lines have not been

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Columbus Completes Tunnel Sewer Project

A 4.5-mile-long tunnel was just completed in Columbus to help deter storm water runoff that has been an issue for residents and motorists. The tunnel, located beneath downtown Columbus and the Scioto River, is nearly 200 feet deep and 20 feet in diameter. Crews used a 95-ton boring machine.  The $371 million tunnel, along with two odor-control facilities, is the largest capital project in the history of the City of Columbus. The tunnel project and upgraded treatment facilities will be

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