Lower Audubon Drive Storm Drainage Improvements

Last updated Mar. 05, 2018 - 12:14 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 Monday, March 5

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. Modeling updates are currently being done with the final project design expected to be complete this summer.

A public meeting will be held on March 20 at 6:30 p.m. to provide residents with an update on the current status of the project and the most recent design plans. The meeting will be held at the Millbrook Exchange Community Center, 1905 Spring Forest Road, Raleigh, NC 27615. Questions about this meeting can be directed to Carrie Mitchell, PE, at 919-996-3940 or RaleighStormwater@raleighnc.gov.


This project is being coordinated with a series of system-wide improvements throughout the North Ridge community. Project location is noted in an overall project location map for the Northern North Ridge set of stormwater projects.

Project design for Lower Audubon includes replacing the existing 36-inch reinforced concrete pipe culvert under Audubon Drive with a 42- and 54-inch reinforced concrete piping in the vicinity of 7708 Audubon Drive. The outlet of the box culvert will be at the back of the property at 7708 Audubon Drive.

The goal of the project is to reduce the potential for flooding by providing a 10-year level of service for Audubon Drive and surrounding areas. This means that the street will not overtop in a storm event of a magnitude expected to be equal or exceed once on average in a 10-year period.


Outlet of Audubon Drive Storm Drainage System


Project schedule with dates and descriptions
Summer 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
Winter 2020Phase IV and V construction complete


This project is one of several projects located along the northern stream to the upper 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. Although there are no known structural flooding problems along the street the potential exists for the street to overtop with water. The engineering study recommended improvements to the existing undersized storm drainage system.

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