Every year, over 30,000 people are killed in road crashes in the United States. Use our map to see the highway with highest rates of fatal accidents in your state and explore each highway in more detail in the interactive grid below.

To determine the most dangerous highway in each US state, we calculated a Fatal Crash Rate that is based on the annual number of road fatalities and fatal crashes according to the National Highway Traffic Safety Administration, adjusted for the average daily traffic counts provided by the Federal Highway Administration. The states are ranked in order of the Fatal Crash Rate of their most dangerous highways. Thus, Florida comes out on top because its most dangerous highway (US-1) has the highest Fatal Crash Rate than 'most dangerous highways' of other states. Rhode Island's most dangerous highway (Route 95), on the other hand, has the lowest Fatal Crash Rate among most dangerous highways of other states, but does not mean that Route 95 is the safest highway in the United States.