Michigan Tech proposes 9‑month study on rising Mackinac Bridge ice closures

Michigan Technological University and Rep. Fairbairn presented a request for funding to study why the Mackinac Bridge has experienced more frequent closures from falling ice in recent years and to evaluate mitigation options. Bill Cordenbrock, Michigan Tech’s vice president for government relations, said the university would analyze structural surfaces, weather patterns in the Straits of Mackinac and recent changes in painting/processes that may be contributing factors.

Cordenbrock told committee members the current winter season (2025–2026) has seen the largest number of closures "in the bridge's history," and said the planned study would include feasibility recommendations to reduce future closures that affect commerce and fuel deliveries to the Upper Peninsula. He estimated the study would take about nine months to complete.

Committee members asked for context on the frequency and consequences of closures; presenters noted extended closures have led to supply disruptions such as temporary fuel shortages in Upper Peninsula communities during past severe weather events.

Next steps: The subcommittee did not record an appropriation vote during the hearing. If funded, Michigan Tech would proceed with the technical analysis and report recommendations to the committee and bridge authorities.