Neighborhood Sociodemographics and Change in Built Infrastructure

Area of Science:

• Urban Planning
• Public Health
• Environmental Science

Background:

• Growing evidence links neighborhood physical infrastructure to health outcomes.
• Limited research exists on the temporal changes and spatial distribution of neighborhood infrastructure improvements.
• Understanding these dynamics is crucial for public health and urban development.

Purpose of the Study:

• To analyze 25-year changes (1985-2010) in neighborhood physical infrastructure (bicycle lanes, trails, transit, parks).
• To examine the spatial distribution and sociodemographic correlates of these infrastructure changes in four diverse U.S. cities.
• To assess the equity of infrastructure improvements across different neighborhood populations.

Main Methods:

• Longitudinal analysis of infrastructure data (bicycle lanes, trails, bus transit, parks) over 25 years.
• Spatial analysis to identify clusters of infrastructure changes.
• Examination of relationships between infrastructure changes and neighborhood sociodemographics.

Main Results:

• Identified increases in bicycle lanes, off-road trails, and bus transit service across all four cities.
• Observed spatial clustering in infrastructure changes, correlating with neighborhood sociodemographics.
• Found positive trends in infrastructure supportive of physical activity.

Conclusions:

• While overall improvements in physical activity infrastructure were noted, their uneven spatial distribution raises significant equity concerns.
• The findings highlight the need to address disparities in neighborhood infrastructure development to ensure equitable health opportunities.
• Future research and policy should focus on equitable distribution of urban amenities.