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1. STANDARDS (Prior to 2011)  - Load Rating.pdf
  
8/25/2020 9:06 AMNo presence informationXiuping Zhang
2. STANDARDS (2011 to 2016) - Load Rating.pdf
  
8/25/2020 9:07 AMNo presence informationXiuping Zhang
3. STANDARDS (2016 Specs) - Load Rating.pdf
  
8/25/2020 9:07 AMNo presence informationXiuping Zhang
4. Box Culverts - Load Rating.pdf
  
8/25/2020 9:07 AMNo presence informationXiuping Zhang