Ia 1 over Old Mans Crk E Ovrflw
Johnson County, Iowa · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ia 1 over Old Mans Crk E Ovrflw in Johnson County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 9 (excellent condition) on the 0-9 scale.
- It was built in 2020, making it 5 years old at the 2025 inventory.
- It carries about 4,890 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 156 of the 376 inventoried bridges in Johnson County rated good (41.5%); 34 (9.0%) 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 January 2024, on a 24-month routine inspection cycle.
- 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 → (41.61195, -91.65121)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 9 | 9 | Excellent condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 37 ft |
| Location | 0.8 mi S of SR F52 |
| NBI structure number | 000000000701005 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 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 Johnson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 80 EB over Iowa River | 1960 | 32,900 | Good |
| US 218 over Deer Creek | 1970 | 32,400 | Good |
| I 80 WB over Iowa River | 1960 | 32,050 | Good |
| EB I-80 over over US 6 & Iais RR | 1995 | 31,000 | Fair |
| I 80 WB over over US 6 & Iais RR | 1992 | 31,000 | Fair |
| EB I-80 over Cic Railway | 1963 | 30,600 | Fair |
All bridges nearby: Johnson County, IA bridge conditions · every bridge in Johnson County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.