Versions of See prior versions of a law on LawServer 2024 Missouri Laws 227.466 – Purple Heart Trail designated for portion of I-64 in St. Charles County and .. 2023 Missouri Laws 227.466 – Purple Heart Trail designated for portion of I-64 in St. Charles County and .. 2022 Missouri Laws 227.466 – Purple Heart Trail designated for portion of I-64 in St. Charles County and ..