Maryland’s Bridge Safety, reported using R

October 18, 2018

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A front-page story in the Baltimore Sun reported last week on the state of the bridges in Maryland. Among the report’s findings:

  • 5.4% of bridges are classified in “poor” or “structurally deficient” condition
  • 13% of bridges in the city of Baltimore are in “poor” condition

Baltimore sun

Those findings were the result of analysis of Federal infrastructure data by reporter Christine Zhang. The analysis was performed using R and documented in a Jupyter Notebook published on Github. The raw data included almost 50 variables including type, location, ownership, and inspection dates and ratings, and required a fair bit of processing with tidyverse functions to extract the Marlyland-specific statistics above. The analysis also turned up an unusual owner for one of the bridges: this one — an access road to the Goddard Space Flight Center — is owned by NASA.


You can read the story in the Baltimore Sun, or check out the R analysis in the Github repo linked below.

Github (Baltimore Sun): Maryland bridges analysis (via Sharon Machlis)

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