Sumac Road over Silver Creek
GoodPottawattamie County, Iowa · 077403301 · Structure no. 000000000290011
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 166 ft
- 3 main spans
- Daily traffic
- 34
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Sumac Road over Silver Creek is a prestressed concrete stringer/multi-beam or girder carrying Sumac Road over Silver Creek in Pottawattamie County, Iowa. It was built in 2008, so it is 17 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 34 vehicles a day, projected to reach 34 by 2043. The structure is 166 ft (50.6 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| 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 Sumac Road over Silver Creek built?
It was built in 2008, making it 17 years old in 2025.
What condition is Sumac Road over Silver Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.
How much traffic does Sumac Road over Silver Creek carry?
About 34 vehicles per day (2022 count).
How long is Sumac Road over Silver Creek?
The structure is 166 ft (50.6 m) long with a longest span of 60 ft (18.3 m) and a deck 25 ft wide.
Who owns Sumac Road over Silver Creek?
It is owned by the County Highway Agency.