Demopolis Lock—which suffered a recent catastrophic failure—is a cautionary tale for other locks and those in Congress and the White House who may fail to see the urgency and importance of investing in the inland waterways system.The nation’s inland waterways lock and dam infrastructure, largely constructed in the 1930s, has seen modernization and rehabilitation across the system, albeit very slowly. Despite those efforts, lock failures continue, and the risk of failure persists.While…