SOUTH CHICKAMAUGA CREEK INTERCEPTOR REHABILITATION
Chattanooga, TN
Award-winning trenchless rehabilitation resolving EPA consent decree requirements while maintaining continuous sewer operations
Ardurra delivered innovative engineering solutions for the South Chickamauga Creek Interceptor Rehabilitation project, addressing critical sewer overflow reduction under a consent decree with the EPA, State of Tennessee, and Tennessee Clean Water Network. The complex project rehabilitated 9,250 feet of 72-inch and 84-inch concrete pipes from the 1970s using advanced Cured-In-Place Pipe (CIPP) technology, providing long-term infrastructure solutions while maintaining continuous operations.
The scope required sophisticated bypass routing to handle 42,000 gallons per minute through rugged terrain, including railway crossings and busy road intersections. Environmental and logistical complexities demanded careful stakeholder coordination to minimize impacts on local waterways while ensuring public health protection and supporting Chattanooga's future growth objectives.
Project Information
Market
Water
Delivery Method
Design-Bid-Build
Client
City of Chattanooga
Services
- Advanced CIPP rehabilitation of 9,250 feet of 72-inch and 84-inch concrete interceptor pipes
- Complex bypass system design and management handling 42,000 gpm through challenging terrain
- Stakeholder coordination and environmental compliance management under EPA consent decree
Awards
The project earned a 2024 American Council of Engineering Companies (TN) Honor Award, recognizing exceptional engineering innovation and collaborative achievement. The successful rehabilitation demonstrates how advanced trenchless technology and strategic coordination can overcome complex infrastructure challenges while ensuring environmental protection and regulatory compliance for critical municipal systems.
Key Highlights
- Rehabilitated 9,250 feet of aging concrete pipes using innovative CIPP technology, addressing sewer overflow reduction under EPA consent decree
- Managed complex bypass routing, handling 42,000 gpm through rugged terrain, including railway and busy road crossings
- Implemented advanced trenchless technology providing long-term infrastructure solutions while maintaining continuous sewer operations
- Coordinated extensive stakeholder engagement, minimizing environmental impacts on local waterways during rehabilitation activities
- Addressed critical consent decree requirements with EPA, State of Tennessee, and Tennessee Clean Water Network, ensuring regulatory compliance
- Overcame complex logistical challenges through innovative engineering approaches and collaborative project management
- Protected public health and environment while supporting Chattanooga's continued growth and development objectives
