NB US 218 over Sink Creek
GoodBlack Hawk County, Iowa · .7 MI S of JCT US 20/I380 · Structure no. 000000000605185
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected August 2023
- Type
- Slab
- Concrete Continuous
- Length
- 177 ft
- 4 main spans
- Daily traffic
- 6,050
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
NB US 218 over Sink Creek is a concrete continuous slab carrying NB US 218 over Sink Creek in Black Hawk County, Iowa. It was built in 1983, so it is 42 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 6,050 vehicles a day, roughly 4% of them trucks, projected to reach 6,050 by 2043. The structure is 177 ft (54 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NB US 218 over Sink Creek built?
It was built in 1983, making it 42 years old in 2025.
What condition is NB US 218 over Sink 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 August 2023.
How much traffic does NB US 218 over Sink Creek carry?
About 6,050 vehicles per day (2022 count), of which roughly 4% are trucks.
How long is NB US 218 over Sink Creek?
The structure is 177 ft (54 m) long with a longest span of 49 ft (14.9 m) and a deck 43 ft wide.
Who owns NB US 218 over Sink Creek?
It is owned by the State Highway Agency.