Al - 75 over Blackburn Relief
Blount County, Alabama · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Al - 75 over Blackburn Relief in Blount County, Alabama, 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 1968, making it 57 years old at the 2025 inventory.
- It carries about 4,105 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 140 of the 178 inventoried bridges in Blount County rated fair (78.7%); 14 (7.9%) 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 June 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 → (33.85248, -86.56648)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 371 ft |
| Location | .7 Mi. So. Co Rd 15 |
| NBI structure number | 009752 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| 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 Alabama department of transportation.
Busiest bridges in Blount County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I - 65 over Al - 160 | 1999 | 50,947 | Fair |
| I65 over Branch | 1959 | 44,547 | Fair |
| I - 65 over Al - 3 (US 31) | 1998 | 42,750 | Fair |
| I65 over Branch | 1959 | 39,845 | Fair |
| I - 65 over Mulberry Fork Warrior Ri | 1995 | 39,680 | Fair |
| Al - 75 over Gurley Creek | 1968 | 11,640 | Fair |
All bridges nearby: Blount County, AL bridge conditions · every bridge in Blount County · Alabama bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.