When the remnants of Hurricane Ida dumped record-breaking rain on the East Coast this month, staircases into New York City’s subway tunnels turned into waterfalls and train tracks became canals.
In Philadelphia, a commuter line along the Schuylkill River was washed out for miles, and the nation’s busiest rail line, Amtrak’s Northeast Corridor running from Boston to Washington, was shut down for an entire day.
