Local over Trib S Fork Eng River
Keokuk County, Iowa · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Local over Trib S Fork Eng River in Keokuk County, Iowa, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1951 and reconstructed in 1981, making it 74 years old at the 2025 inventory.
- It carries about 26 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 37 of the 183 inventoried bridges in Keokuk County rated poor (20.2%); 37 (20.2%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its class is unchanged from 2024 (poor), but component ratings moved: deck 7 to 6.
- Its most recent inspection on record is dated March 2024, on a 12-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 → (41.47497, -92.09775)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 3 | 3 | Serious condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 62 ft |
| Location | 077111403 |
| NBI structure number | 000000000212960 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | March 2024 |
| Inspection interval (item 91) | 12 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 Keokuk County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 92 over Rock Creek | 1964 | 3,400 | Fair |
| Ia 92 & 149 over Bridge Creek | 1967 | 3,110 | Fair |
| Ia 149 over North Skunk River | 1986 | 2,540 | Fair |
| Ia 21 over Coal Creek | 1969 | 2,300 | Fair |
| Ia 23 over Stream | 1976 | 1,980 | Fair |
| Ia 21 over Stream | 1940 | 1,950 | Fair |
All bridges nearby: Keokuk County, IA bridge conditions · every bridge in Keokuk County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.