Ia 9 over Cedar River
Mitchell County, Iowa · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ia 9 over Cedar River in Mitchell County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1992, making it 33 years old at the 2025 inventory.
- It carries about 2,990 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 81 of the 167 inventoried bridges in Mitchell County rated good (48.5%); 16 (9.6%) 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 → (43.28358, -92.85319)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 370 ft |
| Location | 2.0 mi. W of W Jct.US 218 |
| NBI structure number | 000000000036511 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Mitchell County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 9 over Sugar Creek | 2013 | 2,990 | Good |
| US 218 over Turtle Creek | 1987 | 2,530 | Good |
| US 218 over Stream | 1986 | 2,530 | Good |
| US 218 over Stream | 1967 | 2,530 | Good |
| US 218 over Otter Creek | 1970 | 2,530 | Fair |
| US 218 & Ia 9 over Spring Creek | 1975 | 2,460 | Fair |
All bridges nearby: Mitchell County, IA bridge conditions · every bridge in Mitchell County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.