Ia 38 over Allison Creek
FairDelaware County, Iowa · 0.4 Mi. S of Jct. SR X35 · Structure no. 000000000023320
- Built
- 1956
- 69 years old
- Condition
- Fair
- inspected May 2023
- Type
- Slab
- Concrete Continuous
- Length
- 112 ft
- 3 main spans
- Daily traffic
- 1,030
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 38 over Allison Creek is a concrete continuous slab carrying Ia 38 over Allison Creek in Delaware County, Iowa. It was built in 1956, so it is 69 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 6 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 1,030 vehicles a day, roughly 18% of them trucks, projected to reach 1,030 by 2043. The structure is 112 ft (34.1 m) long and 33 ft wide. If it were closed, the detour would be 18 mi (29 km).
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 38 over Allison Creek built?
It was built in 1956, making it 69 years old in 2025.
What condition is Ia 38 over Allison 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 May 2023.
How much traffic does Ia 38 over Allison Creek carry?
About 1,030 vehicles per day (2021 count), of which roughly 18% are trucks.
How long is Ia 38 over Allison Creek?
The structure is 112 ft (34.1 m) long with a longest span of 42 ft (12.8 m) and a deck 33 ft wide.
Who owns Ia 38 over Allison Creek?
It is owned by the State Highway Agency.