FM 170 over Terlingua Creek
Brewster County, Texas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- FM 170 over Terlingua Creek in Brewster County, Texas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1957, making it 68 years old at the 2025 inventory.
- It carries about 1,442 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 67 of the 114 inventoried bridges in Brewster County rated fair (58.8%); 0 (0.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2023, on a 24-month routine inspection cycle.
- 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 → (29.32734, -103.55356)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete stringer or multi-beam girder |
| Length | about 211 ft |
| Location | 1.35 Mi W of SH 118 |
| NBI structure number | 240220095710011 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.
Busiest bridges in Brewster County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 67 Nb/us 90 EB over Alpine Creek | 1939 | 11,650 | Fair |
| US 67 Sb/us 90 WB over Alpine Creek | 1971 | 11,650 | Fair |
| US 67/90 over Moss Creek | 1949 | 8,582 | Fair |
| US 67/90 over Draw | 1949 | 8,582 | Fair |
| US 67/90 over Draw | 1933 | 6,466 | Good |
| SH 118 over Alpine Creek | 1953 | 4,027 | Fair |
All bridges nearby: Brewster County, TX bridge conditions · every bridge in Brewster County · Texas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.