FM over Small
Chickasaw County, Iowa · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- FM over Small in Chickasaw County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1978, making it 47 years old at the 2025 inventory.
- It carries about 20 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 98 of the 304 inventoried bridges in Chickasaw County rated fair (32.2%); 80 (26.3%) 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 March 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (42.93621, -92.43429)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete channel beam |
| Length | about 24 ft |
| Location | 094133001 |
| NBI structure number | 000000000110721 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| 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 Iowa department of transportation.
Busiest bridges in Chickasaw County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 63 over Trib to Wapsipinicon | 2001 | 5,100 | Good |
| Ia 24 over Plum Creek | 2000 | 4,290 | Good |
| US 63 over E. Fk Wapsipinicon River | 1962 | 4,280 | Fair |
| US 63 over Spring Creek | 1971 | 4,280 | Fair |
| US 18 & Ia 346 over U.S. 63 | 2002 | 4,130 | Good |
| Ia 346 over Cedar River | 1984 | 3,340 | Fair |
All bridges nearby: Chickasaw County, IA bridge conditions · every bridge in Chickasaw County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.