California Bridge Safety Report 2025
California's bridges carry some of the heaviest traffic loads in the nation. Here is the latest data on condition ratings, safety concerns, and infrastructure investment.
California is home to 25,975 bridges spanning 58 counties, making it one of the most significant bridge inventories in the country. These bridges carry a combined 679,203,682 vehicle crossings every day. Here is a comprehensive look at the state of California's bridge infrastructure based on the latest National Bridge Inventory data.
25,975
Total Bridges
B
Infrastructure Grade
4.9%
Poor Condition
56 years
Average Age
California at a Glance
California earns an overall infrastructure grade of B based on the percentage of its bridges in poor condition. Currently, 1,284 bridges (4.9%) are rated poor, compared to the national average of 6.7%. The average bridge in California is 56 years old, older than the national average of 48 years.
Of the state's 25,975 bridges, 12,239 are in good condition, 12,452 are fair, and 1,284 are poor. View the full breakdown on the [California report card](/reports/california).
Most-Traveled Bridges in California
These are the bridges carrying the highest daily traffic volumes across California. High-traffic bridges are critical infrastructure -- their condition directly affects the commutes of tens of thousands of drivers.
| # | Bridge | Rating |
|---|---|---|
| 1 | INTERSTATE 80 over GILMAN STREET | 65.3 |
| 2 | INTERSTATE 80 over POWELL STREET | 69.6 |
| 3 | INTERSTATE 80 over BURIED WALKWAY | 62.2 |
| 4 | INTERSTATE 405 over BOLSA CHICA DITCH | 71.1 |
| 5 | ROUTE 60 over E60-N57 CONNECTOR RAMP | 76.3 |
| 6 | STATE ROUTE 60 over PROSPECTORS ROAD | 77.9 |
| 7 | ROUTE 5 over ROUTE 55 | 61.5 |
| 8 | INTERSTATE 5 over LA PAZ RD | 67.6 |
| 9 | INTERSTATE 5 over RED HILL AVE | 64.0 |
| 10 | STATE ROUTE 91 over PATT DRAIN #4 | 72.0 |
Worst-Condition Bridges in California
The following bridges have the lowest sufficiency ratings in California. These structures are the most likely candidates for federal repair or replacement funding under the Bipartisan Infrastructure Law.
| # | Bridge | Rating |
|---|---|---|
| 1 | GREENWOOD AVE over GARNETT CREEK | 13.8 |
| 2 | LOW GAP ROAD over MASONITE INDUSTRIAL ROAD | 15.8 |
| 3 | NO DATA ENTERED over BOULDER CREEK | 19.2 |
| 4 | YERMO RD over MANIX WASH | 19.7 |
| 5 | FOREST ROAD 610 over SOUTH FORK CASPAR CREEK | 19.8 |
| 6 | HUASNA TOWNSITE RD over HUASNA RIVER | 19.9 |
| 7 | CROSS STREET over DEL ROSA CHANNEL | 19.9 |
| 8 | WILDWOOD-MAD RIVER over DUBAKELLA CREEK | 20.1 |
| 9 | PITT STREET over JACKSON CREEK | 20.1 |
| 10 | M 112 over DEER CREEK | 21.0 |
Oldest Bridges in California
California'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.
| # | Bridge | Rating |
|---|---|---|
| 1 | MAIN STREET over NAPA CREEK | 43.5 |
| 2 | ALLEGHANY RD over OREGON CREEK | 37.3 |
| 3 | LAYTNVLLE-DOS RIOS over BURGER CREEK | 58.7 |
| 4 | NAT TRAILS HWY over WORKMAN WASH | 63.2 |
| 5 | MISSION CANYON RD over MISSION CREEK | 48.5 |
| 6 | POPE ST over NAPA RIVER | 45.8 |
| 7 | PURDON ROAD over SOUTH YUBA RIVER | 34.3 |
| 8 | U.S. HIGHWAY 101 over IRWIN CREEK | 51.8 |
| 9 | OLD SONOMA RD over CARNEROS CREEK | 51.1 |
| 10 | HICKS LANE over MUD CREEK | 44.6 |
What These Numbers Mean for California
California's bridge infrastructure grade of B reflects both the current condition of the state's bridges and the scale of the challenge ahead. With an average bridge age of 56 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 [California state page](/bridges/california) or the [California report card](/reports/california). You can also explore how California compares to other states in our [state rankings](/blog/best-bridge-infrastructure-by-state-2025).
Data source: All data comes from the National Bridge Inventory maintained by the Federal Highway Administration (FHWA). BridgeStats is not affiliated with the U.S. government. Data is provided for informational purposes only.
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