Ia 78 over Stream
PoorKeokuk County, Iowa · 3.9 Mi. E of Jct. Ia 149 · Structure no. 000000000604370
- Built
- 1937
- 88 years old, rebuilt 1988
- Condition
- Poor
- inspected April 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 1,190
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 78 over Stream is a concrete continuous culvert carrying Ia 78 over Stream in Keokuk County, Iowa. It was built in 1937 and reconstructed in 1988, so it is 88 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,190 vehicles a day, roughly 28% of them trucks, projected to reach 1,190 by 2042. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 19.9 mi (32 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 78 over Stream built?
It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1988.
What condition is Ia 78 over Stream in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.
How much traffic does Ia 78 over Stream carry?
About 1,190 vehicles per day (2022 count), of which roughly 28% are trucks.
How long is Ia 78 over Stream?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns Ia 78 over Stream?
It is owned by the State Highway Agency.