CO RD G18 over Silver Creek
FairPottawattamie County, Iowa · 077401501 · Structure no. 000000000043661
- Built
- 1992
- 33 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 146 ft
- 3 main spans
- Daily traffic
- 967
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
CO RD G18 over Silver Creek is a prestressed concrete stringer/multi-beam or girder carrying CO RD G18 over Silver Creek in Pottawattamie County, Iowa. It was built in 1992, so it is 33 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 967 vehicles a day, roughly 12% of them trucks, projected to reach 967 by 2043. The structure is 146 ft (44.5 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 CO RD G18 over Silver Creek built?
It was built in 1992, making it 33 years old in 2025.
What condition is CO RD G18 over 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 Silver Creek carry?
About 967 vehicles per day (2021 count), of which roughly 12% are trucks.
How long is CO RD G18 over Silver Creek?
The structure is 146 ft (44.5 m) long with a longest span of 55 ft (16.8 m) and a deck 39 ft wide.
Who owns CO RD G18 over Silver Creek?
It is owned by the County Highway Agency.