Ia 1 over Des Moines River
Van Buren County, Iowa · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ia 1 over Des Moines River in Van Buren 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 2007, making it 18 years old at the 2025 inventory.
- It carries about 2,270 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 37 of the 155 inventoried bridges in Van Buren County rated good (23.9%); 49 (31.6%) 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 August 2023, 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 → (40.72761, -91.95957)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 685 ft |
| Location | 3.9 mi. N of jct. IA 2 |
| NBI structure number | 000000000050181 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Van Buren County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 1 & Ia 16 over Little Lick Creek | 1967 | 2,320 | Fair |
| Ia 2 over Des Moines River | 2012 | 1,440 | Good |
| Ia 2 over Rock Creek | 1925 | 1,340 | Fair |
| Ia 2 over Stream | 1960 | 1,330 | Fair |
| Ia 2 over White Oak Creek | 1925 | 1,320 | Fair |
| Ia 16 over Stump Creek | 2003 | 1,190 | Good |
All bridges nearby: Van Buren County, IA bridge conditions · every bridge in Van Buren County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.