Lower Audubon Drive Storm Drainage Improvements

Last updated Mar. 22, 2018 - 1:53 pm
  • Planning
  • Design
  • Construction
  • Completed
  • Storm Drainage System
  • $3.5 million for North Ridge Phase IV & V
  • Stormwater Management (Lead)
  • Brown and Caldwell, Inc.

Current Activity

Posted Thursday, March 22

This project is part of the North Ridge Phase IV and V storm drainage improvement and stream stabilization project. The City's design consultant, Brown and Caldwell, Inc., has completed surveying cross sections of the stream in the project area. Now, the consultant is working on the final design plans for this project and preparing to submit the design for permit approval. 

A public meeting was held on March 20 to provide residents with an update on the current status of the project and the most recent design plans. Questions about this meeting can be directed to Carrie Mitchell, PE, at 919-996-3940 or

View the public meeting presentation


This project includes a series of system-wide improvements throughout the North Ridge community.

Project design for Lower Audubon includes replacing the existing 36-inch pipe under Audubon Drive with a 42- and 54-inch pipes near 7708 Audubon Drive. Double storm drains also will be installed along Audubon Drive to increase the infrastructure's ability to handle stormwater flows. The drainage outlet on Audubon Drive will be replaced and connected to the neighborhood stream to prevent erosion.

The goal of the project is to reduce the potential for flooding by providing a 10-year level of service on Audubon Drive and surrounding areas. This means that the street will not overtop in a storm event that has a one in 10 chance of occurring.


Outlet of Audubon Drive Storm Drainage System


Project schedule with dates and descriptions
Fall 2018Phase IV and V design complete
Fall 2018Permit requirements, easement acquisition, and coordination of private utility relocations complete
Winter 2019 Phase IV and V construction begins
Spring 2020Phase IV and V construction complete


This project is located along a stream near North Ridge Country Club Lake within the North Ridge community. It is located in the Perry Creek Watershed. A history of flooding events in the area resulted in public meetings in April and June 2006. An engineering study was completed in December 2006. The engineering study recommended improvements to the existing undersized storm drainage system. Phases one through three have been completed.

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