NB I-35 over Elk Creek
Worth County, Iowa · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- NB I-35 over Elk Creek in Worth County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1972, making it 53 years old at the 2025 inventory.
- It carries about 9,950 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 55 of the 116 inventoried bridges in Worth County rated fair (47.4%); 17 (14.7%) 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 → (43.38956, -93.34922)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 127 ft |
| Location | 7.3 Mi. N of Jct. Ia 9 |
| NBI structure number | 000000000600180 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Worth County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-35 over Drainage Ditch | 1972 | 20,600 | Good |
| I-35 over Goose Creek | 1972 | 20,100 | Fair |
| NB I 35 over over UP RR | 1970 | 10,700 | Fair |
| SB I 35 over over UP RR | 1970 | 10,500 | Fair |
| SB I-35 over Elk Creek | 1972 | 9,750 | Fair |
| SR 105 over I-35 | 1972 | 4,419 | Fair |
All bridges nearby: Worth County, IA bridge conditions · every bridge in Worth County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.