FM over I-29
GoodMonona County, Iowa · 4.6 Mi. N of Ia 175 · Structure no. 000000000037320
- Built
- 1959
- 66 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 235 ft
- 4 main spans
- Daily traffic
- 60
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
FM over I-29 is a prestressed concrete stringer/multi-beam or girder carrying FM over I-29 in Monona County, Iowa. It was built in 1959, so it is 66 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 60 vehicles a day, roughly 42% of them trucks, projected to reach 60 by 2043. The structure is 235 ft (71.6 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over I-29 built?
It was built in 1959, making it 66 years old in 2025.
What condition is FM over I-29 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 June 2023.
How much traffic does FM over I-29 carry?
About 60 vehicles per day (2021 count), of which roughly 42% are trucks.
How long is FM over I-29?
The structure is 235 ft (71.6 m) long with a longest span of 69 ft (21 m) and a deck 29 ft wide.
Who owns FM over I-29?
It is owned by the State Highway Agency.