Lower Audubon Drive Storm Drainage Improvements

Last updated Nov. 07, 2018 - 11:21 am
  • Planning
  • Design
  • Construction
  • Completed
  • Storm Drainage System
  • $3.5 million for North Ridge Phase IV & V
  • Stormwater Management (Lead)
  • Brown and Caldwell, Inc. (Design)

Current Activity

Posted Wednesday, Nov. 7

This project is part of the North Ridge Phase IV and V storm drainage improvement and stream stabilization project. The design consultant, Brown and Caldwell, Inc., is working on finalizing the design plans. Plans will be completed after all necessary easements are received from specific properties that are in the project area. These residents have been notified and staking of the easement limits has been completed.

Required permits have been received from the North Carolina Department of Environmental Quality and the US Army Corp of Engineers. Brown and Caldwell, Inc. is in the process of getting necessary permits from the City of Raleigh.

The City also is working with private utility companies to relocate utilities in the project area.

All necessary easements, permits, and private utility relocations will need to take place before construction can begin.

If you have questions about this project or the easement acquisition process, contact Carrie Mitchell, PE, at 919-996-4068 or Carrie.Mitchell@raleighnc.gov.


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
Winter 2019Phase IV and V design complete
Winter 2019Permit requirements, easement acquisition, and coordination of private utility relocations complete
Spring 2019 Phase IV and V construction begins
Summer 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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