490th over Deer Creek
FairWorth County, Iowa · 100192001 · Structure no. 000000000356301
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected November 2023
- Type
- Slab
- Concrete Continuous
- Length
- 102 ft
- 3 main spans
- Daily traffic
- 47
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
490th over Deer Creek is a concrete continuous slab carrying 490th over Deer Creek in Worth County, Iowa. It was built in 1971, so it is 54 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 47 vehicles a day, projected to reach 47 by 2043. The structure is 102 ft (31.1 m) long and 30 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 490th over Deer Creek built?
It was built in 1971, making it 54 years old in 2025.
What condition is 490th over Deer Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.
How much traffic does 490th over Deer Creek carry?
About 47 vehicles per day (2022 count).
How long is 490th over Deer Creek?
The structure is 102 ft (31.1 m) long with a longest span of 39 ft (11.9 m) and a deck 30 ft wide.
Who owns 490th over Deer Creek?
It is owned by the County Highway Agency.