Sp 581 over UPRR
Frio County, Texas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sp 581 over UPRR in Frio County, Texas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1938, making it 87 years old at the 2025 inventory.
- It carries about 1,409 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 55 of the 146 inventoried bridges in Frio County rated fair (37.7%); 0 (0.0%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (28.78467, -99.12796)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 270 ft |
| Location | 1.15 Mi N of FM 1583 |
| NBI structure number | 150830001715035 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.
Busiest bridges in Frio County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ih 35 over Drainage Ditch | 1940 | 27,534 | Good |
| Ih 35 over Draw | 1973 | 25,232 | Good |
| Ih 35 over Draw | 1973 | 25,232 | Good |
| Ih 35 over Draw | 1973 | 25,232 | Fair |
| Ih 35 over Draw | 1973 | 25,232 | Good |
| Ih 35 over Draw | 1973 | 25,232 | Fair |
All bridges nearby: Frio County, TX bridge conditions · every bridge in Frio County · Texas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.