Submitted by Cory Cote

Project Description

The goal of the pilot Red Line Green Roofs Initiative (RLGRI) project is to contrast the out-of-sight and bit-by-bit production of green roofs in Chicago.  It seeks to re-imagine a considerable portion of the urban environment as a diverse, robust, productive, and beautifully constructed rooftop ecosystem which uses a major public transit system as a mechanism for making the rooftops visible to many people.[1] The green roofs may also encourage an increased use of the transit system, which indirectly affects such things as emission amounts because many may choose to ride the train instead of drive their cars.  The site is to be located in the 48th ward, which is bisected by the CTA Red Line and is one of the most densely developed communities.[2] A proposed general project area is at the location immediately east of the Bryn Mawr Red Line stop.  A picture at is somewhat representative of a completed project, though it has only been generated to show just a piece of the entire 50,000 square feet of the project. The design team formally sought, in this location, further evaluation of feasibility and identification of owners of viable properties. A proposal was created and sent to request transportation-based funding for the pilot project.


The Red Line Green Roofs Initiative is proposing to create 50,000 spare feet of green roofs in Chicago’s 48th Ward along the raised tracks of the CTA Red Line train. RLGRI is still an initiative however, as it has not received funding. But, once the funding is secured the project will enlighten people about how we can improve the environment, public health, and perceptions of the uses of rooftops in an urban environment. The idea was conceived in 2008 by Michael Repkin of Repkin Biosystems, Dave Hampton of Hampton Avery Architects and their partners for the pilot project in the 48th Ward, Alderman Maryanne Smith, Ernie Constantino, and Christine Forrester as an outgrowth of success with the Rooftop Victory Garden at True nature Foods in 2006.[3] Collaboration between the design team for RLGRI and the 48th ward was initiated in early 2009.

Hopeful Effects/Outcomes

As the website for Urban Habitat Chicago points out, “Green roofs capture the public imagination. They can remind us of our origins as a species, bringing to mind landscapes long vanished. They also illustrate our common need to remain an integral part of the natural processes.”[4] For cities, green roofs are especially appropriate. There are numerous uses for them, such as space to grow food, renewable fuel and fiber, aesthetically pleasing scenery, and new habitats for animals and plants to live.[5] The roofs remain largely an isolated and inaccessible green initiative in Chicago, and are often so small and piecemeal that even if you came into contact with them, you might be slightly disappointed.[6]

Besides being densely populated, and having a major transit artery running through it, the project’s proposed location is immersed in an area which significantly contributes to the localized Urban Heat Island Effect. Using heat imaging, the City had discovered that the area around Broadway Avenue was a hotspot for the Heat Island Effect.[7] By creating, essentially, a 50,000 square foot “blanket” of vegetation in this area, we could see a decrease in the heating effect.

I believe the significance of this project lies with the implications it has for future projects of the same sort. Along with Chicago’s goal of doubling its canopy size by 2040, I think by also creating thousands of square feet of green roofs, Chicago will become a much better place to live for people and for other animals. In addition, according to Urban Habitat Chicago’s website, “the completion of the Initiative will mark the first large-scale green roof project in the world, placing Chicago at the forefront of community-based green roof efforts.”[8] It will also, “provide data on building energy efficiency, Urban Heat Island Effect mitigation, storm water management, and rooftop biodiversity.”[9]

[Edited by Fiacha Heneghan and Cecile Parrish]

[1] “Red Line Green Roofs Initiative,” Urban Habitat Chicago. 2010,

[2] Ibid.

[3] Layla Bellows, “Green Roofs on Chicago’s Red Line,” AIArchitect, 2009,

[4] “Red Line Green Roofs Initiative,” Urban Habitat Chicago.

[5] Ibid.

[6] Ibid.

[7] Ibid.

[8] Ibid.

[9] Ibid.