Hartsburg Bottm Rd over Slate CR
Boone County, Missouri · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Hartsburg Bottm Rd over Slate CR in Boone County, Missouri, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1981, making it 44 years old at the 2025 inventory.
- It carries about 15 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 167 of the 335 inventoried bridges in Boone County rated good (49.9%); 12 (3.6%) 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 → (38.68011, -92.29158)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete tee beam |
| Length | about 90 ft |
| Location | S 16 T 45 N R 12 W |
| NBI structure number | 23188 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Boone County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 70 E over Lp 70 | 2015 | 63,178 | Good |
| Is 70 E over Hominy CR | 1983 | 53,537 | Good |
| Is 70 E over Grindstone CR | 1949 | 47,500 | Fair |
| Is 70 E over Sugar Br | 1958 | 40,417 | Fair |
| US 63 S over Mo 740 | 1976 | 38,962 | Fair |
| US 63 S over Hominy CR | 2005 | 38,962 | Good |
All bridges nearby: Boone County, MO bridge conditions · every bridge in Boone County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.