By Andy Sullivan (Reuters) -The half-century-old bridge that collapsed https://www.reuters.com/world/us/biden-highlight-manufacturing-jobs-gdp-growth-pittsburgh-2022-01-28 in Pittsburgh on Friday ahead of President Joe Biden’s visit highlighted the perilous state of much of the United States’ transportation infrastructure, which is due to get a trillion-dollar infusion over the coming years. Like nearly 44,000 other spans nationwide, the Fern Hollow Bridge in Pittsburgh is rated in poor condition, according to the U.S. Department of Transportation’s 2021 national inventory. Ten people sustaine…