Center Large Diameter Rehabilitation Project

Large Diameter Sewer Tunnel

CIP 650725-100009 

This project will perform rehabilitation of the City’s sewers in the downtown Columbus area. The work will consist of rehabbing the existing manholes and sewers with a diameter equal to or greater than 36-inches that are in poor condition. The rehabilitation is required to restore the hydraulic capacity of existing infrastructure and to rehabilitate it, so as to extend its useful life another 50 years.

Construction is expected to begin in first quarter of 2021 and be complete by first quarter, 2022.

Each impacted resident will receive written notification from the City’s contractor prior to the rehabilitation work. The notifications will give information on timing of the work and contact information.

Financing for this project is being provided through the Ohio Environmental Protection Agency’s Water Pollution Control Loan Fund Program with a below market-rate loan.

The Ohio EPA has completed a Limited Environmental Review (LER) for this project. View the LER(PDF, 407KB) and the letter of "Notice of Issuance of a Limited Environmental Review and Final Finding of No Significant Impact to All Interested Citizens, Organizations and Government Agencies." 

Questions regarding this project should be directed to Jehan Alkhayri, P.E. at 614-645-5423 or email

Center Large Diameter Rehabilitation Project Map