FM over Dd No 100
FairHumboldt County, Iowa · 093270301 · Structure no. 000000000184981
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected November 2024
- Type
- Slab
- Concrete
- Length
- 32 ft
- 1 main span
- Daily traffic
- 290
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Dd No 100 is a concrete slab carrying FM over Dd No 100 in Humboldt County, Iowa. It was built in 1974, so it is 51 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 290 vehicles a day, roughly 27% of them trucks, projected to reach 290 by 2044. The structure is 32 ft (9.8 m) long and 28 ft wide.
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 FM over Dd No 100 built?
It was built in 1974, making it 51 years old in 2025.
What condition is FM over Dd No 100 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 November 2024.
How much traffic does FM over Dd No 100 carry?
About 290 vehicles per day (2022 count), of which roughly 27% are trucks.
How long is FM over Dd No 100?
The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.
Who owns FM over Dd No 100?
It is owned by the County Highway Agency.