Extending the Life of Critical Sewer Infrastructure for Columbus
When the City of Columbus needed to assess aging large-diameter sanitary sewers on the southwest side and plan targeted rehabilitation, B&N was engaged to evaluate system conditions and recommend solutions that would extend asset life while minimizing community disruption.
Understanding Systemwide Conditions
B&N led a comprehensive condition assessment covering nearly 98,000 feet of sewer infrastructure that serves an important industrial corridor. The evaluation included:
- 46,750 feet of 42- to 78-inch concrete sewer along Big Run Creek
- 2,150 feet of 42-inch reinforced concrete pipe on Harmon Avenue
- 7,000 feet of 42- to 144-inch sewer along Williams Road
- 39,300 feet of the 156-inch Interconnecting Trunk between the Jackson Pike and Southerly Wastewater Treatment Plants
CCTV inspection showed that most segments were performing well, with approximately 10,200 feet showing reinforcing steel or evidence of microbial induced corrosion that required targeted rehabilitation.
Delivering a Safe, Low-Impact Rehabilitation Strategy
Because of significant sewer depth and the need to maintain traffic flow, B&N recommended trenchless rehabilitation to avoid major surface disruption. The team managed:
- Shotcrete spot repair lining
- Hydraulic analysis to compare pre- and post-rehabilitation performance
- Manhole reconstruction, cementitious lining, base and channel restoration and replacement of appurtenances
- Maintenance of traffic planning
- A bypass pumping strategy coordinated with anticipated CIPP inversion points
Additional services included evaluating rehabilitation materials, developing construction access plans and preparing the final PACP-based condition assessment report with repair recommendations.
Outcomes that Support Community Reliability
Through strategic trenchless methods and thorough assessment, B&N helped the City of Columbus extend the useful life of critical sewer assets while maintaining service continuity and reducing construction impacts to nearby neighborhoods and businesses. The project supports long-term system reliability and advances the City’s commitment to proactive infrastructure management.