US-17 (SR-555) over Gravel Creek
Polk County, Florida · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-17 (SR-555) over Gravel Creek in Polk County, Florida, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1934 and reconstructed in 1964, making it 91 years old at the 2025 inventory.
- It carries about 27,500 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 160 of the 359 inventoried bridges in Polk County rated fair (44.6%); 0 (0.0%) 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 → (28.07258, -81.73268)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 5 | Fair condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 26 ft |
| Location | 0.2 Mi South of US-92 |
| NBI structure number | 160084 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Polk County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-4 (SR-400) over Winston Drain | 1999 | 127,000 | Good |
| I-4 (SR-400) over Winston Creek | 1999 | 127,000 | Good |
| I-4 (SR-400) over Lake Gibson Drain Canal | 1961 | 104,500 | Fair |
| US-27 (SR-25) over I-4 (SR-400) | 2004 | 72,576 | Good |
| US-27 (SR-25) over Black Hills Canal | 1965 | 56,000 | Fair |
| US-27 (SR-25) over US-17 (SR-600) | 2000 | 56,000 | Good |
All bridges nearby: Polk County, FL bridge conditions · every bridge in Polk County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.