Mo 99 S over Hog Hollow
Oregon County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mo 99 S over Hog Hollow in Oregon County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1932, making it 93 years old at the 2025 inventory.
- It carries about 305 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 58 of the 84 inventoried bridges in Oregon County rated fair (69.0%); 7 (8.3%) 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 → (36.86984, -91.53201)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 32 ft |
| Location | S 5 T 25 N R 5 W |
| NBI structure number | 5626 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Oregon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 63 S over Warm Fork BNSF RR | 1966 | 11,830 | Fair |
| US 63 S over Warm Fork | 1966 | 8,005 | Fair |
| Mo 19 S over Tucker CR | 1972 | 3,337 | Fair |
| Mo 19 S over Piney CR | 1972 | 2,490 | Fair |
| Bu 63 S over Two Mile CR BNSF RR | 2020 | 2,490 | Good |
| Mo 142 E over Cox CR | 1968 | 2,410 | Fair |
All bridges nearby: Oregon County, MO bridge conditions · every bridge in Oregon County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.