Mo 163 N over Hinkson CR
Boone County, Missouri · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mo 163 N over Hinkson CR in Boone County, Missouri, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1968, making it 57 years old at the 2025 inventory.
- It carries about 19,216 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 12 of the 335 inventoried bridges in Boone County rated poor (3.6%); 12 (3.6%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated September 2023, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (38.92776, -92.33882)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 3 | 3 | Serious condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 272 ft |
| Location | S 24 T 48 N R 13 W |
| NBI structure number | 1591 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | September 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 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.