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