2022's Fern Hollow Bridge collapse raises concerns over unpainted weathering steel bridges, prompting a nationwide review.

2022's Fern Hollow Bridge collapse renews concerns over unpainted steel bridges. Decades before the incident, Gary Tinklenberg, a corrosion expert, raised concerns about uncoated weathering steel, which was supposed to resist corrosion naturally without painting. His claims, along with Scripps News' investigation, have prompted a nationwide review of thousands of bridges using the same material.