CO RD G18 over Middle Silver Creek
FairPottawattamie County, Iowa · 077401701 · Structure no. 000000000043651
- Built
- 1990
- 35 years old
- Condition
- Fair
- inspected May 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 658
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
CO RD G18 over Middle Silver Creek is a concrete continuous culvert carrying CO RD G18 over Middle Silver Creek in Pottawattamie County, Iowa. It was built in 1990, so it is 35 years old, younger 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 6 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 658 vehicles a day, projected to reach 658 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 3.7 mi (6 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was CO RD G18 over Middle Silver Creek built?
It was built in 1990, making it 35 years old in 2025.
What condition is CO RD G18 over Middle Silver Creek 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 2023.
How much traffic does CO RD G18 over Middle Silver Creek carry?
About 658 vehicles per day (2021 count).
How long is CO RD G18 over Middle Silver Creek?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns CO RD G18 over Middle Silver Creek?
It is owned by the County Highway Agency.