Map Shows Which States Have the Best (and Worst) Roads

Buckle up: We‘re revealing how road quality compares across the U.S.
Road trips across these states may be a little rough.
Road trips across these states may be a little rough. | Mental Floss

Whether you’re making your daily commute to work or going on a trip, road conditions make all the difference. Nowhere offers perfectly smooth drives 100 percent of the time, but there are definitely places that are worse off than the rest. We did some digging to find out which states have the worst and best road conditions.

  1. It’s Smooth Sailing in These States
  2. These States Are in for a Bumpy Ride 

Using data from the Bureau of Transportation Statistics, we found the most recent nationwide information (from 2023) on road quality by state. The lists and maps below account for the condition of each state’s total road mileage as assessed by the International Roughness Index (IRI), a global standard used by highway professionals to evaluate road quality. The IRI helps determine each state’s percentage of roadway miles deemed “acceptable” for driving.

It’s Smooth Sailing in These States

states map of best roads
Map by Mental Floss via MapChart // CC by SA 4.0

According to the Bureau of Transportation Statistics, Indiana’s road conditions are the best in the U.S., with the percentage of acceptable roads reaching 97.38 percent in 2023. The state rose to the top spot after finishing second the previous year. Kansas follows, jumping up from the fourth spot in 2022. South Dakota made the most significant improvement—it moved from the 20th position in 2022 to third place in 2023.

These were the top 10 states with the best roads in 2023:  

State

Percentage of Acceptable Roadways

Indiana

97.38

Kansas

96.19

South Dakota

95.1

Wyoming

94.88

Vermont

94.85

Tennessee

94.05

Idaho

93.77

Georgia

93.51

North Dakota

93.33

Nebraska

92.61


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These States Are in for a Bumpy Ride 

state map of worst states to drive in
Map by Mental Floss via MapChart // CC by SA 4.0

On the other end of the spectrum, Rhode Island and Hawaii had the worst road conditions in 2023, with 55.25 percent and 60.91 percent of roads there deemed acceptable, respectively. The two states switched positions in 2022. In third place is New Mexico, which retained its position from the previous year.

The roads in these states could use some work:

State

Overall Percentage Acceptable

Rhode Island

55.25

Hawaii

60.91

New Mexico

67.03

Connecticut

70.03

Mississippi

70.15

Washington

70.37

Maryland

71.28

California

71.96

Pennsylvania

72.63

Oklahoma

73.12

No matter where in the U.S. you’re driving, it helps to be aware of common road hazards. Here are some common examples and the best ways to react to them.

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