Ia 1 over Middle Walnut Creek
FairJefferson County, Iowa · 3.2 Mi. S of S Jct. Ia 78 · Structure no. 000000000031410
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected December 2023
- Type
- Slab
- Concrete Continuous
- Length
- 123 ft
- 3 main spans
- Daily traffic
- 2,560
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 1 over Middle Walnut Creek is a concrete continuous slab carrying Ia 1 over Middle Walnut Creek in Jefferson County, Iowa. It was built in 1969, so it is 56 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 2,560 vehicles a day, roughly 7% of them trucks, projected to reach 2,560 by 2043. The structure is 123 ft (37.5 m) long and 47 ft wide. If it were closed, the detour would be 29.8 mi (48 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 1 over Middle Walnut Creek built?
It was built in 1969, making it 56 years old in 2025.
What condition is Ia 1 over Middle Walnut 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 December 2023.
How much traffic does Ia 1 over Middle Walnut Creek carry?
About 2,560 vehicles per day (2022 count), of which roughly 7% are trucks.
How long is Ia 1 over Middle Walnut Creek?
The structure is 123 ft (37.5 m) long with a longest span of 47 ft (14.3 m) and a deck 47 ft wide.
Who owns Ia 1 over Middle Walnut Creek?
It is owned by the State Highway Agency.