105TH St over Dutch Creek
Monona County, Iowa · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 105TH St over Dutch Creek in Monona County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2012, making it 13 years old at the 2025 inventory.
- It carries about 29 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 60 of the 160 inventoried bridges in Monona County rated good (37.5%); 41 (25.6%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (42.20466, -95.80865)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 30 ft |
| Location | 085430203 |
| NBI structure number | 000000000251221 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Monona County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| NB I-29 over Robinson Ditch | 2011 | 7,800 | Good |
| SB I-29 over Robinson Ditch | 2009 | 7,800 | Good |
| NB I-29 over Cleghorn Creek | 2012 | 7,250 | Good |
| SB I-29 over Cleghorn Creek | 2011 | 7,250 | Good |
| Ia 175 over Mccandlesscleghorn Ditch | 2023 | 5,300 | Good |
| Ia 175 over I-29 | 1959 | 4,090 | Poor |
All bridges nearby: Monona County, IA bridge conditions · every bridge in Monona County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.