310TH Street over Middle Mill Creek
Page County, Iowa · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 310TH Street over Middle Mill Creek in Page County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1980, making it 45 years old at the 2025 inventory.
- It carries about 309 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 85 of the 191 inventoried bridges in Page County rated fair (44.5%); 56 (29.3%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (40.595, -95.11702)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 21 ft |
| Location | 067372901 |
| NBI structure number | 000000000039081 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Page County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 59 over Johnson Run Creek | 1960 | 8,100 | Fair |
| US 71 over Stream | 1972 | 3,450 | Fair |
| US 71 over Stream | 1972 | 3,410 | Fair |
| US 71 & Ia 2 over West Nodaway River | 1972 | 3,360 | Fair |
| Ia 2 over Snake Creek | 1991 | 3,170 | Good |
| US 71 over Drainage Ditch | 1973 | 3,000 | Fair |
All bridges nearby: Page County, IA bridge conditions · every bridge in Page County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.