County Rd 504 over Shawnee CR
Shannon County, Missouri · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Rd 504 over Shawnee CR in Shannon 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 1991, making it 34 years old at the 2025 inventory.
- It carries about 75 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 17 of the 64 inventoried bridges in Shannon County rated good (26.6%); 7 (10.9%) 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 → (37.1297, -91.3246)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 62 ft |
| Location | S 6 T 28 N R 3 W |
| NBI structure number | 15344 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Shannon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 60 E over Birch CR | 1967 | 6,107 | Fair |
| US 60 E over Hurricane CR | 1967 | 5,568 | Fair |
| US 60 E over Seamam CR | 1967 | 4,202 | Fair |
| US 60 E over Deep Pond Hollow | 1978 | 4,202 | Fair |
| US 60 W over Jam UP CR | 2008 | 3,807 | Good |
| US 60 E over Jam UP CR | 2011 | 3,617 | Good |
All bridges nearby: Shannon County, MO bridge conditions · every bridge in Shannon County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.