FM 1581 over Leona River Slough
Frio County, Texas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- FM 1581 over Leona River Slough in Frio County, Texas, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1961, making it 64 years old at the 2025 inventory.
- It carries about 1,953 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 91 of the 146 inventoried bridges in Frio County rated good (62.3%); 0 (0.0%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (28.79494, -99.23803)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Concrete stringer or multi-beam girder |
| Length | about 90 ft |
| Location | 2.60 Mi NE of FM 117 |
| NBI structure number | 150830149901004 |
| Condition class | Good |
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.