US 218 over Big Creek Overflow
FairBlack Hawk County, Iowa · 0.3 Mi. N of Jct. SR D48 · Structure no. 000000000014790
- Built
- 1953
- 72 years old
- Condition
- Fair
- inspected April 2024
- Type
- Slab
- Concrete Continuous
- Length
- 81 ft
- 3 main spans
- Daily traffic
- 3,540
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 218 over Big Creek Overflow is a concrete continuous slab carrying US 218 over Big Creek Overflow in Black Hawk County, Iowa. It was built in 1953, so it is 72 years old, older 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 5 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 3,540 vehicles a day, roughly 7% of them trucks, projected to reach 3,540 by 2042. The structure is 81 ft (24.7 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 218 over Big Creek Overflow built?
It was built in 1953, making it 72 years old in 2025.
What condition is US 218 over Big Creek Overflow 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 April 2024.
How much traffic does US 218 over Big Creek Overflow carry?
About 3,540 vehicles per day (2022 count), of which roughly 7% are trucks.
How long is US 218 over Big Creek Overflow?
The structure is 81 ft (24.7 m) long with a longest span of 31 ft (9.4 m) and a deck 35 ft wide.
Who owns US 218 over Big Creek Overflow?
It is owned by the State Highway Agency.