US 63 over South Skunk River
FairMahaska County, Iowa · 4.2 Mi. N of Jct. Ia 92 · Structure no. 000000000034901
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 467 ft
- 6 main spans
- Daily traffic
- 3,250
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 63 over South Skunk River is a prestressed concrete stringer/multi-beam or girder carrying US 63 over South Skunk River in Mahaska County, Iowa. It was built in 1979, so it is 46 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 5 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 3,250 vehicles a day, roughly 17% of them trucks, projected to reach 3,250 by 2044. The structure is 467 ft (142.3 m) long and 47 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
| 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 US 63 over South Skunk River built?
It was built in 1979, making it 46 years old in 2025.
What condition is US 63 over South Skunk River 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 May 2024.
How much traffic does US 63 over South Skunk River carry?
About 3,250 vehicles per day (2022 count), of which roughly 17% are trucks.
How long is US 63 over South Skunk River?
The structure is 467 ft (142.3 m) long with a longest span of 82 ft (25 m) and a deck 47 ft wide.
Who owns US 63 over South Skunk River?
It is owned by the State Highway Agency.