County Rd 523 over Otter CR
Shelby County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Rd 523 over Otter CR in Shelby County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2018, making it 7 years old at the 2025 inventory.
- It carries about 20 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 63 of the 106 inventoried bridges in Shelby County rated fair (59.4%); 11 (10.4%) 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 → (39.61694, -92.205)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 9 | Excellent condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 9 | Excellent condition |
Bridge details
| Structure | Concrete channel beam |
| Length | about 46 ft |
| Location | S 35 T 56 N R 12 W |
| NBI structure number | 35920 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Shelby County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 36 E over Br of Crooked CR | 1957 | 8,098 | Fair |
| US 36 E over Brush CR | 2007 | 7,990 | Fair |
| US 36 W over Crooked CR | 2007 | 5,289 | Good |
| US 36 W over Rt Ff | 2007 | 5,098 | Good |
| US 36 W over N Fk Salt Rvr | 1978 | 3,988 | Fair |
| US 36 E over North Fk Salt Rvr | 2007 | 3,911 | Good |
All bridges nearby: Shelby County, MO bridge conditions · every bridge in Shelby County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.