FM over Salt Creek
Tama County, Iowa · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- FM over Salt Creek in Tama County, Iowa, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1969, making it 56 years old at the 2025 inventory.
- It carries about 363 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 107 of the 337 inventoried bridges in Tama County rated poor (31.8%); 107 (31.8%) 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 September 2024, on a 24-month routine inspection cycle.
- 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 → (42.0634, -92.39628)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 229 ft |
| Location | 084132902 |
| NBI structure number | 000000000318700 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Tama County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 30 over Stream | 1996 | 11,500 | Good |
| US 30 WB over Slip Bridge Ramp | 2010 | 7,600 | Good |
| US 30 WB over Salt Creek | 2019 | 6,600 | Good |
| US 30 over Trib to Iowa River | 2008 | 6,500 | Good |
| US 30 WB over Iowa River | 2002 | 5,950 | Good |
| US 30 WB over Iowa River East Overflow | 2021 | 5,950 | Good |
All bridges nearby: Tama County, IA bridge conditions · every bridge in Tama County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.