Ia 21 over Coal Creek
FairKeokuk County, Iowa · 5.0 Miles N of Jct. 92 · Structure no. 000000000032610
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected August 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 49 ft
- 2 main spans
- Daily traffic
- 2,300
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 21 over Coal Creek is a concrete continuous culvert carrying Ia 21 over Coal Creek in Keokuk County, Iowa. It was built in 1969, so it is 56 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 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 2,300 vehicles a day, roughly 14% of them trucks, projected to reach 2,300 by 2044. The structure is 49 ft (14.9 m) long and 64 ft wide. If it were closed, the detour would be 29.8 mi (48 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 21 over Coal Creek built?
It was built in 1969, making it 56 years old in 2025.
What condition is Ia 21 over Coal 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 August 2024.
How much traffic does Ia 21 over Coal Creek carry?
About 2,300 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is Ia 21 over Coal Creek?
The structure is 49 ft (14.9 m) long with a longest span of 24 ft (7.3 m) and a deck 64 ft wide.
Who owns Ia 21 over Coal Creek?
It is owned by the State Highway Agency.