District of Columbia Bridge Infrastructure: A Complete Analysis

District of Columbia is home to 261 bridges spanning 1 counties, making it one of the most significant bridge inventories in the country. These bridges carry a combined 8,755,977 vehicle crossings every day. Here is a comprehensive look at the state of District of Columbia's bridge infrastructure based on the latest National Bridge Inventory data.

District of Columbia earns an overall infrastructure grade of A based on the percentage of its bridges in poor condition. Currently, 5 bridges (1.9%) are rated poor, compared to the national average of 6.7%. The average bridge in District of Columbia is 65 years old, older than the national average of 48 years.

Of the state's 261 bridges, 90 are in good condition, 166 are fair, and 5 are poor. View the full breakdown on the [District of Columbia report card](/reports/district-of-columbia).

These are the bridges carrying the highest daily traffic volumes across District of Columbia. High-traffic bridges are critical infrastructure -- their condition directly affects the commutes of tens of thousands of drivers.

The following bridges have the lowest sufficiency ratings in District of Columbia. These structures are the most likely candidates for federal repair or replacement funding under the Bipartisan Infrastructure Law.

District of Columbia's oldest bridges tell the story of the state's transportation history. Some of these structures have been in continuous service for over a century.

District of Columbia's bridge infrastructure grade of A reflects both the current condition of the state's bridges and the scale of the challenge ahead. With an average bridge age of 65 years, many of these structures are approaching or past the 50-75 year design life typical of most bridges. The state's ability to maintain and replace aging bridges will determine whether conditions improve or deteriorate in the coming decade.

For county-by-county breakdowns, historical trends, and individual bridge profiles, visit the [District of Columbia state page](/bridges/district-of-columbia) or the [District of Columbia report card](/reports/district-of-columbia). You can also explore how District of Columbia compares to other states in our [state rankings](/blog/best-bridge-infrastructure-by-state-2025).