A rendering of the plants, yellow and purple flowers, and drains in the bioretention on Glenwood Avenue

Stormwater

Glenwood Avenue Bioretention Area

Green Stormwater Infrastructure

We constructed a 1,700-square-foot bioretention area at the intersection of Glenwood Avenue, St. Marys Street, and Wake Drive. 

The project is engineered to capture, absorb, and clean stormwater runoff. The plants, mulch, soil, gravel, and underground pipes slow down the water and filter out pollution before it reaches Crabtree Creek.

We also added a sidewalk along St. Marys Street that connects to the sidewalk on Glenwood Avenue. This work was partially funded by the Transportation Department

Project Details

 
Type:
Stormwater
Budget:
$350,000 (design & construction)
Project Lead:
Stormwater Management
Contractors:
Hazen and Sawyer (Design); Lanier Construction Company (Contractor)

Contact

 

Heather Dutra
Senior Engineer
919-996-4012

Lead Department:
Engineering Services
Participating Department:
Parks, Recreation and Cultural Resources
Service Unit:
Stormwater

Subscribe

 

Planning

The phase is complete. 

Phase Contacts

 

Heather Dutra
Senior Engineer
919-996-4012

Lead Department:
Engineering Services

Design

This phase is complete. 

Next Steps

 

 

Phase Contacts

 

Heather Dutra
Senior Engineer
919-996-4012

Lead Department:
Engineering Services

Construction

This phase is complete. 

Phase Contacts

 

Heather Dutra
Senior Engineer
919-996-4012

Lead Department:
Engineering Services

Complete

Crews are finished with this green stormwater infrastructure project. It included: 

  • Excavating land in the project area; 
  • Grading the site; 
  • Installing pipes and drainage structures; 
  • Seeding, planting, and mulching the area; and, 
  • Adding a fence along part the sidewalk in the project area. 

We planted more than 750 plants. Next, we'll plant six trees. This will create a green, aesthetic space that is also eco-friendly. 

During the warranty period, crews will make required repairs or maintenance for the project. This period ends in fall 2022. 

Use Caution in This Area

Please don't go into the bioretention area. This will help protect the new grass and plants that filter out pollution from stormwater runoff when it rains. 

Phase Contacts

 

Heather Dutra
Senior Engineer
919-996-4012

Lead Department:
Engineering Services

The project area for the bioretention area on Glenwood Avenue. 

A rendering of the bioretention area on Glenwood Avenue. 

Schedule

Date Activity
Fall 2018 Project design began
Winter 2020 Project design complete
Spring - Fall 2020 Construction bid process
Winter 2021 Project construction phase begins
Fall 2021 Project construction complete

Background

The bioretention area will capture stormwater from .75 acres of impervious surface (nearby streets, driveways, and rooftops). The area is expected to prevent excess nitrogen and total suspended solids from polluting waterways each year. 

  • 6 pounds of nitrogen 
  • 109 pounds of suspended solids

This is a great example of how planted stormwater devices help the environment. The features remove pollution and reduce impacts to stormwater pipes and streams.

Learn more about green stormwater infrastructure