On this week’s Talking Michigan Transportation podcast, questions and explanations about the increasing frequency of melting ice falling from the Mackinac Bridge cables, creating hazards for motorists and the need to close the bridge for many hours at a time. This video illustrates the danger. 

First, Joe Shampine, maintenance supervisor for the Mackinac Bridge Authority, talks about the dangers the heavy ice presents to travelers below and the decision-making process for closing and reopening the bridge. He also offers praise for maintenance staff members who have to explain to frustrated drivers why the bridge has to be closed during these events.

Later, Matt Chynoweth, the former chief bridge engineer at the Michigan Department of Transportation (MDOT) and now bridge practice leader for the consulting firm RS&H, returns to the podcast to offer broader perspective based on his research and conversations with other bridge owners across the country and world.