FM L-31 over I-29
FairFremont County, Iowa · 2.9 Mi. N of Jct. Ia 2 · Structure no. 000000000600130
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 351 ft
- 4 main spans
- Daily traffic
- 577
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
FM L-31 over I-29 is a steel continuous stringer/multi-beam or girder carrying FM L-31 over I-29 in Fremont County, Iowa. It was built in 1972, so it is 53 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 577 vehicles a day, roughly 14% of them trucks, projected to reach 577 by 2044. The structure is 351 ft (107 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM L-31 over I-29 built?
It was built in 1972, making it 53 years old in 2025.
What condition is FM L-31 over I-29 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 June 2024.
How much traffic does FM L-31 over I-29 carry?
About 577 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is FM L-31 over I-29?
The structure is 351 ft (107 m) long with a longest span of 112 ft (34.1 m) and a deck 33 ft wide.
Who owns FM L-31 over I-29?
It is owned by the State Highway Agency.