I see MDOT did find some money to start the M-231 project, which includes widening of existing US-31 in Grand Haven. M-231 is being built as a two lane road on four lane ROW. Therefore, it should be upgradable to freeway when traffic warrants fairly easily. http://www.michigan.gov/documents/mdot/US-31_Bypass_Public_Meeting_Presentation_9-22-10_337279_7.pdf