NB I-29 over Cleghorn Creek
GoodMonona County, Iowa · 4.5 Mi. S of Ia 175 · Structure no. 000000000037271
- Built
- 2012
- 13 years old
- Condition
- Good
- inspected April 2024
- Type
- Slab
- Concrete Continuous
- Length
- 123 ft
- 3 main spans
- Daily traffic
- 7,250
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
NB I-29 over Cleghorn Creek is a concrete continuous slab carrying NB I-29 over Cleghorn Creek in Monona County, Iowa. It was built in 2012, so it is 13 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 7,250 vehicles a day, roughly 32% of them trucks, projected to reach 7,250 by 2044. The structure is 123 ft (37.6 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NB I-29 over Cleghorn Creek built?
It was built in 2012, making it 13 years old in 2025.
What condition is NB I-29 over Cleghorn Creek 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 April 2024.
How much traffic does NB I-29 over Cleghorn Creek carry?
About 7,250 vehicles per day (2022 count), of which roughly 32% are trucks.
How long is NB I-29 over Cleghorn Creek?
The structure is 123 ft (37.6 m) long with a longest span of 47 ft (14.3 m) and a deck 43 ft wide.
Who owns NB I-29 over Cleghorn Creek?
It is owned by the State Highway Agency.