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Design Project

East Cole Creek Interceptor Rehabilitation

The City has been actively working to improve Cole Creek Interceptors downstream of the Cole Creek CSO basin. The interceptors are located on opposite sides of Cole Creek and are connected at multiple locations via siphons under the Creek. The interceptors have been deteriorating due to root intrusion and other defects. Based on modeling recommendations, continued rehabilitation efforts are needed to improve operations and reliability.

The East Cole Creek Interceptor Rehabilitation Project is located along the east bank of Cole Creek. The interceptor’s capacity – its ability to convey the flow of water – has decreased over time due to sediment buildup and root intrusion. This project will rehabilitate the interceptor from Miami Street to Cass Street.


  • Restore lost flow capacity within the interceptor.
  • Decreased potential for incidents of sewer backups.
  • Rehabilitate/replace manholes from Miami to Cass Streets.

What is an Interceptor?

An interceptor is a major sewer line that receives flows from other sewer lines and stormwater drainage systems. This combined flow is then directed to a wastewater treatment facility or another interceptor.

Since interceptor sewers serve collected flows, they are among the largest pipes in a sewer network. Some interceptor sewer lines can be over eight feet in diameter and convey millions of gallons of wastewater per day.

Additional Resources

Project Map

factsheet.png   Project Factsheet


Conceptual design is underway with 10% design documents expected Q3 2023. Construction is estimated to begin in 2024, and to be complete by April 2025.

Contact information

City of Omaha
Public Works Department
Guemba Katawara

Carollo Engineers
Weston Engel

Public Facilitator
Felsburg, Holt & Ullevig
Dave Lampe

project references

Project Number: 54293

LCTP Project Name: East Cole Creek Interceptor Rehabilitation