CO RD G18 over Branch of Silver Creek
GoodPottawattamie County, Iowa · 077401507 · Structure no. 000000000043671
- Built
- 1990
- 35 years old
- Condition
- Good
- inspected May 2023
- Type
- Slab
- Concrete Continuous
- Length
- 129 ft
- 3 main spans
- Daily traffic
- 967
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
CO RD G18 over Branch of Silver Creek is a concrete continuous slab carrying CO RD G18 over Branch of 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 967 vehicles a day, roughly 12% of them trucks, projected to reach 967 by 2043. The structure is 129 ft (39.3 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 CO RD G18 over Branch of Silver Creek built?
It was built in 1990, making it 35 years old in 2025.
What condition is CO RD G18 over Branch of 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 May 2023.
How much traffic does CO RD G18 over Branch of Silver Creek carry?
About 967 vehicles per day (2021 count), of which roughly 12% are trucks.
How long is CO RD G18 over Branch of Silver Creek?
The structure is 129 ft (39.3 m) long with a longest span of 49 ft (14.9 m) and a deck 39 ft wide.
Who owns CO RD G18 over Branch of Silver Creek?
It is owned by the County Highway Agency.