Northside Interceptor Sewer Replacement

Wheaton Sanitary District owns and operates a sanitary sewer transmission pipe called the Northside Interceptor. This interceptor serves the northeast and central portions of the District’s service area, including the City of Wheaton and Village of Carol Stream. The Northside Interceptor was originally constructed in 1925, replaced in 1964, rehabilitated in 2003, and is scheduled to be replaced again.

Baxter & Woodman prepared a route study and is providing design engineering for the project. In order to prepare the route study, Baxter & Woodman created a 3D model by importing information into Civil 3D directly from GIS. The 3D model made it quicker and easier to identify and evaluate alternative routes. The project also included:

  • 14 months of flow monitoring
  • Coordinating collection of 55 soil borings
  • Wetland delineation report to DuPage County
  • Coordination with 16 permitting agencies and governmental authorities
  • Formal Value Engineering

The new interceptor will be 5.3 miles long, increase capacity, improve maintenance access and minimize disturbance to environmentally sensitive areas. The interceptor will range in size from 24-inch to 54-inch diameter.

Construction will be phased over multiple years. Total project costs are estimated between $40 million and $50 million.