The Most Dangerous Roads in America

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Published 5/20/2025

America’s drivers covered a record 3.4 trillion miles last year, yet the simple act of getting behind the wheel remains perilous. Traffic-related deaths are the leading cause of death for teens and the 13th leading cause for all Americans.

To better understand the issue, researchers at TruckInfo.net analyzed data from the National Highway Traffic Safety Administration and discovered the following trends.

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Drunk driving and speeding are both major issues

Despite efforts to curb drunk driving, it remains the leading cause of driving fatalities followed closely by speeding.

Driving fatalities increased significantly during COVID and remain high

Driving fatalities are up nearly 25% over the past 10 years but the change hasn’t been linear. There was a large jump in 2020 and 2021. While there has been progress in recent years, fatalities are still up compared to pre-pandemic.

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Rural roads are no longer more dangerous

Up until 2015, rural roads were significantly more dangerous than Urban roads. However, urban road fatalities overtook rural fatalities in 2016 and the gap has only widened.

The most dangerous roadways in America

Roadway Fatalities 2023 Fatalities per
1M People
% Fatality Change
(2019-2023)
I-10 in Maricopa, AZ 42 9 83%
I-15 in San Bernardino, CA 39 18 0%
US-41 in Hillsborough, FL 27 17 23%
I-10 in Riverside, CA 26 10 37%
SR-101 in Maricopa, AZ 24 5 26%
US-1 in Brevard, FL 23 36 -8%
US-27 in Polk, FL 23 28 130%
US-61 SR-14 S THIRD ST in Shelby, TN 22 24 175%
I-10 in Pima, AZ 22 21 267%
US-101 in Santa Clara, CA 22 12 0%

While the most dangerous roads are in large urban areas, there is little correlation between a county’s size and the number of road fatalities – indicating that road design and driving habits are important factors.

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The most dangerous counties

County Fatalities 2023 Fatalities per 1M People % Fatality Change
(2019-2023)
Los Angeles, CA 807 83 13%
Maricopa, AZ 678 147 53%
Harris, TX 536 109 27%
San Bernardino, CA 378 172 18%
Cook, IL 377 73 28%
Dallas, TX 336 127 25%
Riverside, CA 330 132 14%
Miami-Dade, FL 329 119 10%
San Diego, CA 278 85 10%
Shelby, TN 259 283 67%

Similar to roadways, more drivers doesn’t always equate to an increase in fatalities, with little correlation between population and fatalities.

The most dangerous states

At the state level, Mississippi, Wyoming, and New Mexico have the most driving fatalities per capita.

Full Data

Methodology

Fatal accident statistics were sourced from the National Highway Traffic Safety Administration (NHTSA) and population data was sourced from the US Census Bureau.

About the Author
Kyle Fretwell of TruckInfo.net
Kyle Fretwell has worked as a researcher and data journalist for over a decade. His work has appeared in publications such as Bloomberg, Fox Business, MSN, USA Today, CNBC, and the Houston Chronicle.

He now manages TruckInfo.net's content team and is a regular fixture at the Mid-America Trucking Show in Louisville.

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