Swift Implementation of Green Infrastructure (SIGI)

Example of green infrastructure including boulders sitting in shallow water surrounded by rocks and plants

The City and County of Denver is rolling out a new initiative to convert publicly owned pavement into green infrastructure. The Swift Implementation of Green Infrastructure (SIGI) program rapidly turns paved, heat-trapping spaces into vibrant, stormwater-capturing landscapes.

Led by Denver's Division of Green Infrastructure (DGI), SIGI focuses on neighborhoods most affected by:

  • Excess pavement and impervious cover
  • Localized flooding
  • Extreme heat

By planting trees, native grasses, and pollinator-attracting perennials in public rights-of-way, we create healthier, more resilient blocks—one neighborhood at a time.

11th & Quebec (Before)

Grass and sidewalk at 11th and Quebec before green infrastructure installation

11th & Quebec (After)

Newly installed green infrastructure installed at 11th and Quebec

26th & Walnut (Before)

Sidewalk at 26th and Walnut before green infrastructure installation

26th & Walnut (After)

Newly installed green infrastructure installed at 26th and Walnut

What We're Looking For

City sidewalk with excess pavement that would be a good candidate for green infrastructure

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City sidewalk with excess pavement that would be a good candidate for green infrastructure

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City sidewalk with excess pavement that would be a good candidate for green infrastructure

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SIGI transforms spaces along city streets with excess pavement and a lack of tree canopy. We focus on right-of-way spaces with:

  • Excess or unnecessary pavement
  • Compacted gravel or rock
  • High temperatures
  • Lack of trees and vegetation
  • Localized flooding
  • Icy and slippery in winter
  • A general "need for green"

These redesigned spaces will clean stormwater runoff, cool the air, and expand pollinator habitats along our streets.

Where SIGI is Growing: Neighborhood by Neighborhood

SIGI is a yearly effort focused on neighborhoods with the greatest need for climate-resilient infrastructure. In each area, we work with community-based organizations (CBOs) to identify priority locations, connect with residents and businesses, and make sure the project reflects local voices.

Completed & Current Projects

  • 2024 Pilot Project: W 14th Ave & Perry Street and W 14th Ave & Lowell Blvd, West Colfax
  • 2025 Focus Area: Five Points

Coming Soon

  • 2026: Valverde and Lincoln Park

Stay Connected

Let's Grow This Together!

The growth of SIGI needs your input. Whether you're a neighbor, business owner, or just passionate about green space and stormwater, reach out and share your thoughts with us.

Email:
green.infrastructure@denvergov.org

Tag us in your photos and stories of SIGI plantings!

Instagram:
@DenverDOTI

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