US-221 (SR-55) over Alligator Creek
Madison County, Florida · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-221 (SR-55) over Alligator Creek in Madison County, Florida, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1969, making it 56 years old at the 2025 inventory.
- It carries about 1,100 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 23 of the 60 inventoried bridges in Madison County rated good (38.3%); 1 (1.7%) 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 July 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (30.33431, -83.64473)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 37 ft |
| Location | 7.6 Mi. S. of I-10 |
| NBI structure number | 350011 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 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 Florida department of transportation.
Busiest bridges in Madison County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-10 (SR-8) over Cedar Creek | 1973 | 20,200 | Fair |
| I-10 (SR-8) over Piddlin Creek | 1973 | 20,200 | Fair |
| I-10 (SR-8) over Piddlin Creek | 1973 | 20,200 | Fair |
| I-10 (SR-8) over Hixtown Swamp Equalizer | 1973 | 20,200 | Fair |
| I-10 WB (SR-8) over SR-53 | 1972 | 14,978 | Fair |
| I-10 EB (SR-8) over SR-53 | 1972 | 14,978 | Fair |
All bridges nearby: Madison County, FL bridge conditions · every bridge in Madison County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.