Montana Code > Title 7 > Chapter 12 > Part 41 > § 7-12-4146 Montana Code 7-12-4146. Retroactive application of bid procedures Current as of: 2023 | Check for updates | Other versions 7-12-4146. Retroactive application of bid procedures. The provisions of 7-12-4141 through 7-12-4145 shall be applicable to all special improvement districts created within 1 year preceding March 16, 1931. Previous Next Part 41 Contents