Which State Has the Best Bridge Infrastructure? Complete 2025 Rankings

America's 624,191 bridges carry 5,008,158,078 vehicle crossings every day. But the condition of that infrastructure varies enormously from state to state. Some states have fewer than 2% of their bridges in poor condition. Others are struggling with rates above 15%.

We analyzed the latest National Bridge Inventory data to grade every state's bridge infrastructure. Our grading methodology is based on the percentage of bridges classified as being in poor condition: under 3% earns an A, under 6% a B, under 10% a C, under 15% a D, and 15% or above receives an F.

1. [Nevada](/bridges/nevada) -- Only 1% of Nevada's 2,123 bridges are in poor condition, earning it a grade of A. The average bridge age is 37 years.

2. [Arizona](/bridges/arizona) -- Only 1.1% of Arizona's 8,587 bridges are in poor condition, earning it a grade of A. The average bridge age is 49 years.

3. [Delaware](/bridges/delaware) -- Only 1.1% of Delaware's 874 bridges are in poor condition, earning it a grade of A. The average bridge age is 48 years.

4. [Texas](/bridges/texas) -- Only 1.2% of Texas's 56,951 bridges are in poor condition, earning it a grade of A. The average bridge age is 45 years.

5. [Georgia](/bridges/georgia) -- Only 1.7% of Georgia's 15,090 bridges are in poor condition, earning it a grade of A. The average bridge age is 48 years.

1. [U.S. Virgin Islands](/bridges/us-virgin-islands) -- 33.3% of U.S. Virgin Islands's 24 bridges are rated poor, giving it a grade of F. With an average bridge age of 53 years, many of these structures are approaching or past their designed service life.

2. [Iowa](/bridges/iowa) -- 18.6% of Iowa's 23,716 bridges are rated poor, giving it a grade of F. With an average bridge age of 46 years, many of these structures are approaching or past their designed service life.

3. [West Virginia](/bridges/west-virginia) -- 17.8% of West Virginia's 7,345 bridges are rated poor, giving it a grade of F. With an average bridge age of 46 years, many of these structures are approaching or past their designed service life.

4. [South Dakota](/bridges/south-dakota) -- 16.1% of South Dakota's 5,883 bridges are rated poor, giving it a grade of F. With an average bridge age of 50 years, many of these structures are approaching or past their designed service life.

5. [Maine](/bridges/maine) -- 15.4% of Maine's 2,542 bridges are rated poor, giving it a grade of F. With an average bridge age of 55 years, many of these structures are approaching or past their designed service life.

Our grades are based solely on the percentage of bridges in poor condition, as reported in the National Bridge Inventory. A bridge is classified as "poor" when its deck, superstructure, or substructure receives a condition rating of 4 or below on the FHWA's 0-9 scale. This does not mean the bridge is unsafe -- it means the bridge has deteriorated to a point where it needs significant repair or replacement. Learn more in our guide to [bridge condition ratings](/blog/bridge-condition-ratings-guide).

Factors like bridge age, traffic volume, and state budget constraints all influence these numbers. States with older bridge inventories (particularly in the Northeast and Midwest, where major highway construction peaked in the 1950s and 1960s) tend to have higher poor-condition rates simply because more of their bridges have reached the end of their design life.

Click any state in the rankings above to see a detailed [report card](/reports) with county-by-county breakdowns, worst bridges, historical trends, and more. Every bridge profile includes its condition history, exact location, and structural details.