Lawrence Green Streets Program


Lawrence Green Streets Program
Location Massachusetts
Organization American Planning Association’s Sustainable Communities Division; American Planning Association’s Massachusetts Chapter; Groundwork Lawrence

In 2016, a group of Massachusetts planners, public health professionals, and members of the American Planning Association partnered with Groundwork Lawrence on a health impact assessment (HIA) framework to measure the economic, social, and environmental impacts of planting street trees in the Arlington and South Common neighborhoods in Lawrence, Massachusetts, a city with a nearly 80 percent Hispanic population.

The tree-planting initiative was part of Groundwork’s Green Streets Program, a three-year effort to promote energy efficiency with green infrastructure elements, such as street trees. Urban forestry plays an important role in stormwater management, air quality, climate resiliency, and aesthetics in neighborhoods, and street trees also enhance residents’ mental health, physical activity, and social interaction. 

The HIA team conducted original research, collected local data, and gathered input from community members to evaluate how planting additional street trees might affect health concerns in the target neighborhoods. The team also used the process to engage and educate local leaders and residents and build support for increasing urban tree cover in Lawrence.

The project differed from a traditional HIA because it combined research with the development of innovative community resources to help the Green Streets Program meet its goals, help residents understand the environmental, social, and economic benefits of street trees, and tailor species selection to community environmental and health issues, such as flooding and asthma. Those resources included:

  • An educational flyer titled “Benefits of Street Trees in Lawrence.”
  • Detailed environmental analyses of the health-related pros and cons of proposed street tree species and related recommendations.
  • A list of tree species that will be more or less vulnerable to a changing climate.
  • Tree nutrition labels.
  • A tree infographic.
  • A table (by priority impact area) featuring a summary of and hyperlinks to research compiled from around the country.

The team designed the materials to be replicable and adaptable for any community looking to develop a healthy urban tree canopy and promote sustainable approaches to neighborhood development. The HIA report also provided a series of recommendations for fostering the planting of and care for future street trees:

  • Develop additional messaging focused on how street trees can help address health issues in Lawrence.
  • Start a tree-planting competition between the South Common and Arlington neighborhoods.
  • Create a tree stewardship program.
  • Use online tools to track and monitor the project’s success.
  • Adopt a tree preservation and protection ordinance for private properties.
  • Adopt a street tree bylaw or ordinance for public trees.

All key materials were translated into Spanish and have been used by Groundwork Lawrence to help promote their Green Streets Program to city residents and show the economic, social, environmental, and health benefits that street trees provide. The team developed the HIA to be adaptable and used by any community or organization to promote the importance of green infrastructure to improving the health and well-being of neighborhood residents.

Downloads HIA Report
Downloads HIA Report
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The Health Impact Project’s toolkit contains resources that help communities, agencies, and other organizations take action to improve public health. The toolkit offers a collection of health impact assessments, guides, and other research to support policymakers’ efforts to consider health when making decisions across sectors, such as housing, planning, and education.

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At A Glance
  • Status:
  • Publication date:
    2017, March
  • Decision-making levels:
  • Sectors:
    Community development, Natural resources management, Planning and zoning
  • Additional topic areas:
    Resilience and sustainability, Emergency preparedness/ response, Mental/behavioral health, Parks and green spaces, Land-use planning, Treatment alternatives, Redevelopment, Economic development, Water, Siting
  • Drivers of health:
    Diet and physical activity, Safe and affordable parks and recreational facilities, Safe and affordable public transit, Safe and accessible active transportation routes, Safe street infrastructure, Clean air and water, Community safety, Family and social support, Disease vectors, Noise
  • Affected populations:
    Economically disadvantaged, Racial and ethnic minorities, Mental illness, Chronic health conditions
  • Community types:
    Urban, Suburban
  • Research methods:
    Quantitative research, Qualitative research, Focus groups, Literature review
  • Funding source:
    Other funding