Also, it should be known that the combination of these bridges really is the most direct route between Missouri and Kentucky. Otherwise, you need to detour to I-57/I-24 or I-155/US-412 through TN. Both are significant detours, and if one of these bridges were to fail or become unsafe for driving, this could really have some negative impacts on the transport of goods via this route. Regardless of how historical there are, they truly do not meet today's needs.