Mo 21 S over Lit Black Rvr
Carter County, Missouri · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mo 21 S over Lit Black Rvr in Carter County, Missouri, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 2011, making it 14 years old at the 2025 inventory.
- It carries about 837 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 13 of the 48 inventoried bridges in Carter County rated good (27.1%); 2 (4.2%) are rated poor.
- 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 → (36.83052, -90.82276)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 9 | Excellent condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete single box beam |
| Length | about 112 ft |
| Location | S 11 T 25 N R 2 E |
| NBI structure number | 33587 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Carter County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 60 E over Cane CR | 1963 | 5,547 | Fair |
| US 60 E over Snyder CR | 1980 | 5,405 | Fair |
| US 60 E over Evans CR | 1980 | 5,405 | Fair |
| US 60 E over Dry Valley | 1983 | 5,405 | Fair |
| US 60 E over Poca Hollow | 1983 | 5,405 | Fair |
| US 60 E over Ratliffe Hollow | 1930 | 5,340 | Fair |
All bridges nearby: Carter County, MO bridge conditions · every bridge in Carter County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.