SB I-29 over Drainage Ditch
GoodPottawattamie County, Iowa · 0.1 Mi. N of N JCT Ia 192 · Structure no. 000000000044890
- Built
- 1957
- 68 years old, rebuilt 1969
- Condition
- Good
- inspected November 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 7,100
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
SB I-29 over Drainage Ditch is a concrete continuous culvert carrying SB I-29 over Drainage Ditch in Pottawattamie County, Iowa. It was built in 1957 and reconstructed in 1969, so it is 68 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 7,100 vehicles a day, roughly 20% of them trucks, projected to reach 7,100 by 2044. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SB I-29 over Drainage Ditch built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1969.
What condition is SB I-29 over Drainage Ditch in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.
How much traffic does SB I-29 over Drainage Ditch carry?
About 7,100 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is SB I-29 over Drainage Ditch?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns SB I-29 over Drainage Ditch?
It is owned by the State Highway Agency.