US 30 over Middle Raccoon River
Carroll County, Iowa · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 30 over Middle Raccoon River in Carroll 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 1982, making it 43 years old at the 2025 inventory.
- It carries about 6,000 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 112 of the 249 inventoried bridges in Carroll County rated fair (45.0%); 17 (6.8%) 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 February 2023, on a 24-month routine inspection cycle.
- 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 → (42.07842, -94.90214)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 149 ft |
| Location | 1.4 mi. W of jct. U.S. 71 |
| NBI structure number | 000000000017061 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Carroll County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 30 over Ditch #77 | 1919 | 13,000 | Fair |
| US 30 over Storm Creek | 1955 | 7,300 | Fair |
| US 30 over over UP RR | 1982 | 6,800 | Fair |
| US 71 over UP RR & Rd | 1988 | 5,600 | Fair |
| US 71 over Stream | 2000 | 5,600 | Good |
| US 71 over Middle Raccoon River | 1985 | 5,100 | Good |
All bridges nearby: Carroll County, IA bridge conditions · every bridge in Carroll County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.