Our nation s inland waterways and rivers are the hidden backbone of our freight network they carry the equivalent of about 51 million truck trips each year . In many cases, the inland waterways system has not been updated since the 1950s, and more than half of the locks are over 50 years old . Barges are stopped for hours each day with unscheduled delays, preventing goods from getting to market and driving up costs. There is an average of 52 service interruptions a day throughout the system. Projects to repair and replace aging locks and dredge channels take decades to approve and complete, exacerbating the problem further.