US 34 over Platte River
Adams County, Iowa · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 34 over Platte River in Adams County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2014, making it 11 years old at the 2025 inventory.
- It carries about 2,390 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 23 of the 185 inventoried bridges in Adams County rated good (12.4%); 85 (45.9%) 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 → (40.97892, -94.49452)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 143 ft |
| Location | 1.3 Mi. W of Jct. 25 |
| NBI structure number | 000000000013341 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Adams County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 148 over East Nodaway River | 1976 | 3,580 | Fair |
| Ia 148 over over BNSF RR | 1976 | 3,580 | Good |
| US 34 over E Nodaway River & BNSF R | 1964 | 2,970 | Fair |
| US 34 over Metz Creek | 1921 | 2,390 | Fair |
| US 34 over Kemp Creek | 1964 | 2,240 | Fair |
| Sycamore Avenue over Saylings Creek | 1967 | 1,404 | Fair |
All bridges nearby: Adams County, IA bridge conditions · every bridge in Adams County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.