Walkable Road Intersection Density Across 18 U.S. Communities

EnviroAtlas data estimates walkable road intersection density within a 750-meter radius of any 10-meter pixel in 18 U.S. communities. The U.S. Environmental Protection Agency created this dataset, which was last updated in April 2025. Intersection density is calculated using kernel density, weighting closer intersections higher than distant ones.

Use Cases

• Analyze the correlation between intersection density and walking for transportation across different community geographies.
• Model pedestrian accessibility by examining kernel density estimates of walkable road intersections.
• Compare walkability metrics, such as intersection density within a 750-meter radius, between the 18 listed U.S. communities.
• Integrate 10-meter pixel-level intersection density data with other urban environmental layers for comprehensive neighborhood studies.

Strengths

• Covers 18 distinct U.S. communities, providing a multi-city perspective on walkability.
• Provides high-resolution data at the 10-meter pixel level for detailed spatial analysis.
• Uses a defined kernel density methodology for calculating intersection density, ensuring consistency.
• Maintained by the U.S. Environmental Protection Agency, indicating an authoritative source.

Limitations

• Spatial coverage is limited to 18 specific U.S. communities, not a national or random sample.
• The dataset's temporal coverage and update frequency are not specified, potentially limiting time-series analysis.
• Data is only available in ESRI REST format, requiring specific GIS software or libraries for access.

Provenance

Source

U.S. Environmental Protection Agency EnviroAtlas

Collection Method

Estimated using kernel density calculation on walkable road intersections within a 750-meter radius of 10-meter pixels.

Freshness

Last updated on 2025-04-11.

Geography

18 U.S. communities: Austin, TX; Birmingham, AL; Baltimore, MD; Brownsville, TX; Chicago, IL; Cleveland, OH; Des Moines, IA; Durham, NC; Fresno, CA; Green Bay, WI; Memphis, TN; Minneapolis/St. Paul, MN; Milwaukee, WI; New Bedford, MA; New Haven, CT; New York, NY; Phoenix, AZ; Pittsburgh, PA; Portland, ME.