SH 317 over BNSF Railroad
Bosque County, Texas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 317 over BNSF Railroad in Bosque County, Texas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1954, making it 71 years old at the 2025 inventory.
- It carries about 2,245 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 68 of the 147 inventoried bridges in Bosque County rated fair (46.3%); 2 (1.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated poor in the 2024 inventory and is now fair (deck 4 to 5, substructure 5 to 6).
- Status change: its 2024 load posting has been removed.
- Its most recent inspection on record is dated November 2024, 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 → (31.65249, -97.47015)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 346 ft |
| Location | 0.4 Mi S of SH 6 |
| NBI structure number | 090180039801028 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.
Busiest bridges in Bosque County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 6 over Trib of N Bosque River | 1940 | 10,880 | Fair |
| SH 6 over Sears Creek | 1937 | 10,001 | Good |
| SH 6 over Preston Branch | 1931 | 8,903 | Good |
| SH 6 over BNSF Railroad | 1936 | 7,980 | Fair |
| SH 6 over Branch of Sears Creek | 1937 | 7,980 | Fair |
| SH 6 over Neils Creek | 1937 | 7,463 | Good |
All bridges nearby: Bosque County, TX bridge conditions · every bridge in Bosque County · Texas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.