70th Road over Trib. to S. FORK SOLOMON
Osborne County, Kansas · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 70th Road over Trib. to S. FORK SOLOMON in Osborne County, Kansas, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1920, making it 105 years old at the 2025 inventory.
- It carries about 5 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 19 of the 244 inventoried bridges in Osborne County rated poor (7.8%); 19 (7.8%) 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 December 2024, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (39.46691, -98.88857)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel through truss |
| Length | about 41 ft |
| Location | 3.4E of Alton |
| NBI structure number | 000710653403740 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | December 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Osborne County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US24 Hwy over N F Solomon R Drain | 1967 | 2,307 | Fair |
| US24 Hwy over Kyle Railroad | 1968 | 2,307 | Fair |
| US281 Hwy over Osborne Canal Drainage | 1950 | 1,667 | Good |
| US24 Hwy over N F Solomon R Drain | 1949 | 1,620 | Good |
| US24 Hwy over N F Solomon R Drain | 1949 | 1,620 | Good |
| US24 Hwy over N F Solomon R Drain | 1949 | 1,620 | Good |
All bridges nearby: Osborne County, KS bridge conditions · every bridge in Osborne County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.