Old Austin Hwy over Three Mile Creek
Gillespie County, Texas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Old Austin Hwy over Three Mile Creek in Gillespie County, Texas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1922, making it 103 years old at the 2025 inventory.
- It carries about 89 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 57 of the 134 inventoried bridges in Gillespie County rated fair (42.5%); 1 (0.7%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated February 2024, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (30.22546, -98.68209)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel through truss |
| Length | about 62 ft |
| Location | 0.20 Mi SE of US 290 |
| NBI structure number | 140870AA0168001 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | February 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.
Busiest bridges in Gillespie County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 290 over Barons Creek | 1935 | 17,682 | Fair |
| US 290 over Pedernales River | 2011 | 13,849 | Fair |
| US 290 over Barons Creek | 2014 | 13,184 | Good |
| Ih 10 over Private Rd & Stockpass | 1974 | 12,760 | Good |
| US 290 over Draw | 1956 | 12,600 | Good |
| US 290 over Draw | 1955 | 11,190 | Good |
All bridges nearby: Gillespie County, TX bridge conditions · every bridge in Gillespie County · Texas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.