The Michigan Department of Transportation (MDOT) is doing a terrible job. A recent audit found problems in the way they audit bids for work. I've spoken with people at road construction companies who have told me about changes that make the situation worse than a few years ago for the speed and cost of building roads. Policy things making it slower and more expensive that are baked in to the contracts.

It's not just spending, which isn't efficient. Michigan has been (for decades) on the of the lowest spending states per capita on roads. This is across both Republicans and Democrats in the governor's seat.