The concrete, rectangular box culvert on Knights Way that carries stormwater through the neighborhood.


North Ridge Drainage Improvements

Updating the Stormwater System

We improved the stormwater system on Lower Audubon Drive, Knights Way, and Rainwood Lane. We also repaired the stream in the neighborhood, too. This work will reduce street, yard, and home flooding in the North Ridge community. 

Project Details

$3.9 million
Project Lead:
Stormwater Management
Brown and Caldwell, Inc. (Design) Carolina Civilworks, Inc. (Construction)



Gilles Bellot, PE
Senior Project Manager

Lead Department:
Engineering Services
Service Unit:




This phase is complete. 

Lead Department:
Engineering Services


Here is the design for each section: 

Lower Audubon Drive

  • Replacing the 36-inch pipe under Audubon Drive with 42- and 54-inch pipes near 7708 Audubon Drive;
  • Installing double storm drains along Audubon Drive to increase the infrastructure's ability to handle stormwater flows; and, 
  • Replacing the drainage outlet on Audubon Drive and connecting it the neighborhood stream to prevent erosion.

Knights Way

  • Replacing the 48-inch pipe under Knights Way with a box culvert that is five feet high and 10 feet wide near 1321 Knights Way and 7812 Blackwing Court; and, 
  • Stormwater runoff will come out of the pipe near the back of the property at 7812 Blackwing Court. 

Rainwood Lane 

  • Installing 48- and 54-inch pipes near 1201 Rainwood Lane; 
  • Installing a 4-foot by 4-foot box culvert system near 1208 Rainwood Lane; 
  • Stormwater runoff will flow out of the storm drainage system near the back of the property at 1208 Rainwood Lane; and, 
  • The new culverts will be added to the stormwater drainage system that's already in place so that the entire system can handle more stormwater flows during a rain storm. 

Stream Stabilizations

  • Restoring about 1,200 feet of stream between Rainwood Lane and Knights Way; and,
  • Restoring an additional 280 feet of stream downstream of Knights Way to accommodate the streams 10-year storm event flows in the North Ridge community.
Lead Department:
Engineering Services


This phase is complete. 

Lead Department:
Engineering Services


Construction is complete! The project included installing: 

  • A new 160-foot-long box culvert on Knights Way. The culvert will carry stormwater through the system in the neighborhood and surrounding area.
  • New stormwater pipes on Wagram Court, Rainwood Lane, and Audubon Drive. 
  • Stream improvements between Rainwood Lane and Knights Way.
  • New storm drains along Rainwood Lane and Audubon Drive to help reduce road flooding. 

Crews completed planting along the stream in January 2022. 

View the project map

Lead Department:
Engineering Services

A concrete, rectangular culvert that carries water under Knights Way when it rains. This replaced a smaller pipe that could not handle the amount of rain that flows through the neighborhood. 

New storm drains on Audubon Drive that collect water from the road when it rains. We installed several storm drains on this road to help reduce flooding impacts. 

A new round, concrete stormwater pipe off of Audubon Drive. The pipe is larger and can carry more stormwater through the system when it rains. 

A view of improvements to a stream between Knights Way and Rainwood Lane. The shape and flow of the stream will help protect the stream's bank and reduce flooding. 

Audubon Drive in Raleigh closed for construction of a stormwater project. 

Water flowing into a new stormwater culvert during a rainstorm on Nov. 12. 

A repaired stream between Rainwood Lane and Knights Way. Water flows to a new stormwater culvert.

The new box culvert that'll carry stormwater across Knights Way.


Date Activity
Winter 2019 Project design complete
Summer 2019 Construction phase starts (bid, utility relocation, and easement acquisition)
Fall 2019 Construction phase begins
Spring 2020 Active construction starts
Summer 2021 Construction phase complete
Winter 2022 Planting


This project is located along a stream near North Ridge Country Club Lake in the Perry Creek Watershed. A public meeting was held in December 2006 after residents reported ongoing flooding issues. The engineering study recommended improvements to the undersized storm drainage system.