250TH Ave over Stream
Decatur County, Iowa · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 250TH Ave over Stream in Decatur County, Iowa, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1972, making it 53 years old at the 2025 inventory.
- It carries about 5 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 78 of the 199 inventoried bridges in Decatur County rated poor (39.2%); 78 (39.2%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated November 2022, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (40.61811, -93.72866)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel through truss |
| Length | about 83 ft |
| Location | 67251002 |
| NBI structure number | 000000000366030 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 2022 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Decatur County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rest Area Road over Rest Area Road | 1994 | 13,800 | Fair |
| SB I-35 over Grand River | 1970 | 7,700 | Fair |
| NB I-35 over Grand River | 1970 | 7,550 | Fair |
| SB I-35 over 310TH Street | 1970 | 7,250 | Fair |
| SB I-35 over Stream | 1970 | 7,250 | Good |
| NB I-35 over 310TH St | 1970 | 7,100 | Fair |
All bridges nearby: Decatur County, IA bridge conditions · every bridge in Decatur County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.