FM over Dd
PoorPosted for loadPalo Alto County, Iowa · 094311101 · Structure no. 000000000268670
- Built
- 1946
- 79 years old
- Condition
- Poor
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 52 ft
- 1 main span
- Daily traffic
- 72
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Dd is a steel stringer/multi-beam or girder carrying FM over Dd in Palo Alto County, Iowa. It was built in 1946, so it is 79 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 72 vehicles a day, roughly 40% of them trucks, projected to reach 72 by 2043. The structure is 52 ft (15.9 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Dd built?
It was built in 1946, making it 79 years old in 2025.
What condition is FM over Dd in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.
How much traffic does FM over Dd carry?
About 72 vehicles per day (2021 count), of which roughly 40% are trucks.
How long is FM over Dd?
The structure is 52 ft (15.9 m) long with a longest span of 49 ft (14.9 m) and a deck 20 ft wide.
Who owns FM over Dd?
It is owned by the County Highway Agency.