America Builds Too Many Schools By Highways

The playground at Swansea elementary school in Denver, with I-70 on the right. Image via Google Maps
The playground at Swansea elementary school in Denver, with I-70 on the right. Image via Google Maps

One in 11 U.S. public schools are within 500 feet of a highway, exposing 4.4 million children to elevated levels of pollution, according to a new investigation by the Center for Public Integrity and the Center for Investigative Reporting.

Attending school by a highway puts kids at elevated risk of developing asthma. In addition, there’s evidence that pollutants from traffic interfere with cognitive development and may play a role in autism.

America’s system of school siting is not getting better, either. In the last school year, one in five newly constructed schools were near highways, the investigation found. (The exception is California, which banned the placement of schools within 500 feet of a highway in 2003.)

The Center for Public Integrity’s Jamie Smith Hopkins cited two factors that explain the pattern: School districts are attracted to cheap land by highways, and the dangers road pollution poses to children are not widely understood by parents.

Siting schools on cheap land near highways also makes them unwalkable, which compels parents to drive children to school, compounding traffic and air quality problems.

The Safe Routes to School National Partnership notes that 27 states impose “acreage standards” that require minimum lot sizes for new schools, fueling the search for cheap land. (Since 2003, South Carolina, Rhode Island, and Maine have all jettisoned these acreage requirements.)

The U.S. EPA recommends school districts favor sites away from major roads [PDF], as long as it does not lead to a major increase in the distance children have to travel to reach school.

  • Jeffrey Baker

    What is the population-weighted fraction of the American landscape that is more/less than 500 feet from a highway?

  • Jamie Smith Hopkins

    Thanks for writing about our story! Just to clarify, we looked at busy roads, which includes more than just highways. Our traffic threshold: 30,000-plus vehicles a day, or at least 10,000 vehicles a day including 500-plus trucks.

  • Franklun Ngaihte

    well, this is a wellcome news.

  • xplosneer
  • bobfuss

    Yeah, I suspect that the schools are simply built where the people are, which in turn reduces the number of vehicle-miles required to drop the kids off and pick them up.

  • susan bell

    No, school districts look at where the cheap land is. As an example, Charleston County School District, SC decided to build several schools, two of which are county wide magnets, on land that is located between two major highways, next to several TRI facilities less than three miles away, a busy railroad a hundred feet away from the school sports facilities and an airport. These schools are also nearby leaking UST tanks! Some States do have guidelines when it comes to building schools, some are totally oblivious to what is best for our children.

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