As documented in “ATLANTA BRIDGE COLLAPSE: What burned under the I-85 overpass?” by Richard Elliot and Rikki Klaus of wsbtv, the material stored under the I-85 bridge for 10 years was High Density Polyethylene. As I discuss what that means fire-safety-wise, I’ll be generally talking about polyethylene. Polyethylene is constructed from the combination of ethylene … More Understanding The I-85 Fire