Swanson Road Interceptor Master Plan

The Portage Water Reclamation Board recognized that the Water Reclamation Facility (WRF) was receiving significantly higher I/I than in years past. This project involved evaluating the existing condition of the city's main interceptor and preparing a plan to address existing deficiencies and future growth. Four miles long, this interceptor runs from Highway 6 in the southern part of Portage north to the Portage Water Reclamation Facility. It collects wastewater from the entire city and ranges in size from 18 to 48 inches. The interceptor crosses under two interstates, two active railroad corridors, and two highways, as well as under a legal drain using a double-barreled inverted siphon. The Swanson Road Interceptor is near the edge of development for the city, and Portage is expected to continue growing to the south, which could substantially increase flows. The interceptor has been in service for 40 years and had never been inspected.