US 18 over Waterman Creek
GoodO'Brien County, Iowa · 1.3 Mi. W. of SR M12 · Structure no. 000000000038241
- Built
- 2020
- 5 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 204 ft
- 3 main spans
- Daily traffic
- 3,530
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 18 over Waterman Creek is a prestressed concrete stringer/multi-beam or girder carrying US 18 over Waterman Creek in O'Brien County, Iowa. It was built in 2020, so it is 5 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 3,530 vehicles a day, roughly 20% of them trucks, projected to reach 3,530 by 2043. The structure is 204 ft (62.3 m) long and 47 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 18 over Waterman Creek built?
It was built in 2020, making it 5 years old in 2025.
What condition is US 18 over Waterman 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 November 2023.
How much traffic does US 18 over Waterman Creek carry?
About 3,530 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is US 18 over Waterman Creek?
The structure is 204 ft (62.3 m) long with a longest span of 73 ft (22.3 m) and a deck 47 ft wide.
Who owns US 18 over Waterman Creek?
It is owned by the State Highway Agency.