County Rd 21 over South Fork Saline River
Thomas County, Kansas · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Rd 21 over South Fork Saline River in Thomas 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 1930, making it 95 years old at the 2025 inventory.
- It carries about 30 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 2 of the 82 inventoried bridges in Thomas County rated poor (2.4%); 2 (2.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 2024, 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 → (39.15562, -101.01915)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 31 ft |
| Location | 8.4S 3.0W of Mingo |
| NBI structure number | 000970425004164 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Thomas County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| K25 Hwy over Prairie Dog Creek Drg | 1965 | 7,096 | Fair |
| US24 Hwy over Prairie Dog Creek Drg | 1938 | 6,605 | Good |
| I70 Hwy Wl-el over S Fork Solomon River | 1966 | 6,400 | Poor |
| I-70 Highway over N Fork Solomon River | 1965 | 6,350 | Good |
| I-70 Hwy Westbound over Union Pacific Railroad | 1965 | 6,350 | Good |
| I-70 Hwy Eastbound over Union Pacific Railroad | 1965 | 6,350 | Good |
All bridges nearby: Thomas County, KS bridge conditions · every bridge in Thomas County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.