Grand Avenue green stormwater infrastructure

Learn more about green infrastructure on Grand Avenue

About the project

Grand Avenue was fully reconstructed between West 48th Street and Lake Street to improve the street condition, make safety improvements, improve public transit connections, and add green infrastructure to the area. The project added over 100 bioretention basins next to bump-outs, chicanes, and boulevards, as well as two large underground infiltration chambers. When it rains, the GSI on the project stores over 375,000 gallons of water and lets it soak into the ground. 

  • Type of green infrastructure: Bioretention basins and underground detention. 
  • Completion Date: 2022 
  • Functions: 
    • Collects rainwater from the roads, sidewalks, and buildings and lets it soak into the ground 
    • Adds native plants and trees, and protects existing trees 
    • Reduces hardcover and greens the city 
    • Creates a community amenity  
    • Combines safety and environmental goals 
Inlet to green boulevard from the street
Concrete Box with dirt around it

Contact us

Allison Bell, PE

Green Infrastructure Coordinator

Public Works



Katie Kowalczyk, PE

Water Resources Coordinator

Public Works



Surface Water & Sewers

Public Works




Public Service Center
250 South 4th St, Room 300
Minneapolis, MN 55415

(Our office is closed to the public at this time)

Office hours

Monday – Friday
7 a.m. – 3:30 p.m.

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