D-25 over Small Natural Stream
PoorWoodbury County, Iowa · 088472408 · Structure no. 000000000053490
- Built
- 1959
- 66 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 154 ft
- 3 main spans
- Daily traffic
- 1,207
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
D-25 over Small Natural Stream is a prestressed concrete stringer/multi-beam or girder carrying D-25 over Small Natural Stream in Woodbury 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 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.
It carries about 1,207 vehicles a day, projected to reach 1,207 by 2044. The structure is 154 ft (46.9 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 D-25 over Small Natural Stream built?
It was built in 1959, making it 66 years old in 2025.
What condition is D-25 over Small Natural Stream 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 July 2024.
How much traffic does D-25 over Small Natural Stream carry?
About 1,207 vehicles per day (2022 count).
How long is D-25 over Small Natural Stream?
The structure is 154 ft (46.9 m) long with a longest span of 56 ft (17.1 m) and a deck 36 ft wide.
Who owns D-25 over Small Natural Stream?
It is owned by the County Highway Agency.