The bridge is reaching the end of its useful life and will need replacement in the future. The North Dakota Department of Transportation (NDDOT) is completing an Engineering and Feasibility Study for Interstate 94 Midway and the Grant Marsh Bridge. I-94 Grant Marsh Bridge Engineering and Feasibility Study Special Assessment District Information.Bismarck Streets News - Check this link frequently for updates about changes that impact traffic on Bismarck streets including street projects, construction, road closures and more.