Why Did Pittsburgh Keep the Rotting Fern Hollow Bridge Open Until It Fell With a Bus?

On January 28, 2022, Pittsburgh's Fern Hollow Bridge fell 100 feet into a park with a city bus on it. It had been rated "poor" for more than ten years. It was inspected every year. And every year, it stayed open. Federal investigators later concluded that a correct load rating would have forced the city to close it. More than 10,000 bridges across the U.S. are built from the same kind of steel. What happened at Fern Hollow, why the inspections missed it, and what it means for America's bridges right now. CHAPTERS 0:00 The morning the bridge fell 3:53 The steel that was allowed to rust 8:17 How inspectors missed it 12:04 Pittsburgh after Fern Hollow 15:46 10,000 bridges of the same steel 19:40 America's bridges rated poor 23:31 What it would take SOURCES NTSB Highway Investigation Report HIR-24-02, Collapse of the Fern Hollow Bridge (Feb 2024) NTSB Highway Investigation Report HIR-23-07 (May 2023) FHWA Technical Advisory T 5140.22, Uncoated Weathering Steel in Structures (1989) FHWA Memorandum on Uncoated Weathering Steel Bridges (July 19, 2023) FHWA InfoBridge, National Bridge Inventory data ARTBA 2025 Bridge Report, based on FHWA National Bridge Inventory PublicSource, "More Pittsburgh bridges rated poor post-Fern Hollow" (June 2025) Scripps News, analysis of federal weathering steel bridge data (2024) National Association of Counties, federal transportation funding updates (Aug–Sept 2026) ABOUT THIS VIDEO Photos and diagrams from the NTSB, FHWA and the Architect of the Capitol are U.S. government works in the public domain. Maps include Google map data. Some scenes are AI-generated illustrations of events described in official reports. Narration uses a synthetic voice. Real data. No panic. #RedTag #FernHollowBridge #Infrastructure