US-441 WB over Mill Slough
Osceola County, Florida · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-441 WB over Mill Slough in Osceola County, Florida, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1965 and reconstructed in 2003, making it 60 years old at the 2025 inventory.
- It carries about 26,000 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 97 of the 256 inventoried bridges in Osceola County rated fair (37.9%); 0 (0.0%) 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 February 2025, 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 → (28.3043, -81.38563)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete slab |
| Length | about 151 ft |
| Location | US-441 WB - Mill Slough |
| NBI structure number | 920009 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2025 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Osceola County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-4 over Ditch | 1960 | 142,500 | Fair |
| I-4 over Davenport Creek | 1960 | 135,500 | Fair |
| I-4 over Ditch | 1960 | 135,500 | Fair |
| SR 91 Tpk NS 248.5 over Mill Slough | 1963 | 81,200 | Fair |
| I-4 WB over Reedy Creek | 1960 | 67,750 | Fair |
| I-4 EB over Reedy Creek | 1960 | 67,750 | Good |
All bridges nearby: Osceola County, FL bridge conditions · every bridge in Osceola County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.