CivMetrics collects key infrastructure data for the largest cities in the United States. We’re posting some of our insights here. In this installment, we look at the US counties with the best and worst bridges. For questions about our data, or to request data, please contact

In which U.S. counties are the bridges crumbling, and where are they rock solid?

Seven Iowa counties show up in the bottom 10:

Meanwhile, when it comes to quality of bridges, Texas and Florida dominate the top end of the list. Here are the counties with the best bridges:

Below, find a sortable table of the bridge conditions in all U.S. counties: