SR-51 (hal Adams) over Suwannee River
Lafayette County, Florida · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR-51 (hal Adams) over Suwannee River in Lafayette County, Florida, 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 1947, making it 78 years old at the 2025 inventory.
- It carries about 4,900 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 12 of the 28 inventoried bridges in Lafayette County rated fair (42.9%); 2 (7.1%) are rated poor.
- 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 → (30.09924, -83.17175)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 5 | Fair condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Steel suspension |
| Length | about 687 ft |
| Location | 3 Mi. N. of Mayo |
| NBI structure number | 330009 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Lafayette County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-27 (SR-20) over Suwannee River Relief | 1954 | 5,900 | Good |
| US-27 (SR-20) over Suwannee River | 1989 | 5,900 | Fair |
| US-27 (SR-20) over Leadbeater Branch | 1950 | 4,711 | Good |
| US-27 (SR-20) over Picket Lake Branch | 1950 | 4,000 | Fair |
| US-27 (SR-20) over Gracie Branch | 1950 | 4,000 | Good |
| US-27 (SR-20) over Peterson Creek | 1965 | 3,800 | Good |
All bridges nearby: Lafayette County, FL bridge conditions · every bridge in Lafayette County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.