The share of bridges categorized as deficient in Michigan has declined considerably over the past ten years, improving at a higher rate than that for the “Top Ten” average and for peer states. However, the share of bridges that are deficient in Michigan remains higher than both the "Top Ten" average, and Michigan has a higher share of deficient bridges than all peer states except Massachusetts.

What It Is: Percent of bridges in deficient condition, by area.

Why It Matters: A strong, reliable transportation system benefits both businesses and individuals. Poor bridge quality imposes many tangible costs and reduces productivity.

Deficient Bridges Trends

Deficient Bridges Standings

Source: Department of Transportation- Highway Bridge by Wearing Surface