Rt Nn S over Little Black River
Ripley County, Missouri · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rt Nn S over Little Black River in Ripley County, Missouri, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2008, making it 17 years old at the 2025 inventory.
- It carries about 90 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 40 of the 117 inventoried bridges in Ripley County rated good (34.2%); 7 (6.0%) 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 December 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 → (36.77958, -90.79869)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 8 | Very good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 32 ft |
| Location | S 36 T 25 N R 2 W |
| NBI structure number | 32626 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 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 Missouri department of transportation.
Busiest bridges in Ripley County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 160 E over Dry CR | 1974 | 5,793 | Fair |
| US 160 E over Logan CR | 1974 | 5,793 | Fair |
| US 160 E over Current Rvr | 1989 | 5,374 | Fair |
| US 160 E over Cypress CR | 1974 | 4,809 | Good |
| Mo 21 S over Logan CR | 1922 | 3,058 | Fair |
| Mo 142 E over Spring Bluff CR | 1971 | 3,011 | Good |
All bridges nearby: Ripley County, MO bridge conditions · every bridge in Ripley County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.