Tool · Compare
Compare two states
Choose any two states to see how their bridge inventories stack up on condition share, structural deficiency, and size — all from the federal NBI.
According to the Federal Highway Administration (FHWA), more than 575,000 public highway bridges are catalogued in the National Bridge Inventory, and every state reports its inspection results on a two-year cycle as of the 2024 NBI release. This tool compares any two states on the percentage measures that make a fair comparison. Read how the figures are derived in our methodology.
Texas vs California
| Measure | TX | CA | Better |
|---|---|---|---|
| Total bridges | 56,740 | 27,040 | Texas |
| Good condition | 41.9% | 32.5% | Texas |
| Poor condition | 1.1% | 4.6% | Texas |
| Structurally deficient | 1.13% | 4.60% | Texas |
"Better" is lower for poor and structurally deficient (fewer bridges needing repair) and higher for good-condition share. Source: FHWA National Bridge Inventory, 2024 release.
How should I read a state comparison?
Why do big states often look worse?
Larger inventories include more old rural spans, so raw counts favor small states. The percentage measures (good share, SD rate) are the fair way to compare states of different sizes.
What is "structurally deficient"?
A bridge with at least one major component rated 4 or below, or a sufficiency rating under 50. It is a repair-priority flag, not a closure order. Read more →
Explore more
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |