Neptune ST over S. Skunk River
PoorPosted for loadJasper County, Iowa · 079201405 · Structure no. 000000000197110
- Built
- 1948
- 77 years old
- Condition
- Poor
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 327 ft
- 5 main spans
- Daily traffic
- 60
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Neptune ST over S. Skunk River is a steel continuous stringer/multi-beam or girder carrying Neptune ST over S. Skunk River in Jasper County, Iowa. It was built in 1948, so it is 77 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 60 vehicles a day, projected to reach 60 by 2043. The structure is 327 ft (99.7 m) long and 21 ft wide. If it were closed, the detour would be 11.2 mi (18 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Neptune ST over S. Skunk River built?
It was built in 1948, making it 77 years old in 2025.
What condition is Neptune ST over S. Skunk River 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 Neptune ST over S. Skunk River carry?
About 60 vehicles per day (2022 count).
How long is Neptune ST over S. Skunk River?
The structure is 327 ft (99.7 m) long with a longest span of 70 ft (21.3 m) and a deck 21 ft wide.
Who owns Neptune ST over S. Skunk River?
It is owned by the County Highway Agency.