Modifies provisions relating to the "Waterways and Ports Trust Fund"

This bill modifies the rules for Missouri's Waterways and Ports Trust Fund to allow it to accept gifts and grants from various sources while keeping its money separate from the state's general revenue. It establishes strict criteria for using fund money, requiring that projects improve river commerce, be located within specific port areas, and be funded at least 20% by sources other than the trust itself. The bill also states that any money taken from the fund can help local projects qualify for additional outside grants, but the fund will automatically end and its remaining balance will go to the state's general revenue by December 31, 2033.