Mill Run Blvd. over Mill Slough
Osceola County, Florida · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mill Run Blvd. over Mill Slough in Osceola 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 1991, making it 34 years old at the 2025 inventory.
- It carries about 2,300 vehicles a day (traffic count year 2023).
- Its listed owner is a city or municipal highway agency.
- It is one of 159 of the 256 inventoried bridges in Osceola County rated good (62.1%); 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 July 2024, 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 → (28.33431, -81.38567)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 23 ft |
| Location | 0.3 Mi SE of Michigan Ave |
| NBI structure number | 925003 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2024 |
| 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.