Mallard over Calmus Creek
FairCerro Gordo County, Iowa · 097203004 · Structure no. 000000000106760
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected January 2024
- Type
- Slab
- Concrete Continuous
- Length
- 75 ft
- 3 main spans
- Daily traffic
- 3,290
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Mallard over Calmus Creek is a concrete continuous slab carrying Mallard over Calmus Creek in Cerro Gordo County, Iowa. It was built in 1964, so it is 61 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 3,290 vehicles a day, roughly 14% of them trucks, projected to reach 3,290 by 2044. The structure is 75 ft (22.9 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mallard over Calmus Creek built?
It was built in 1964, making it 61 years old in 2025.
What condition is Mallard over Calmus 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 January 2024.
How much traffic does Mallard over Calmus Creek carry?
About 3,290 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is Mallard over Calmus Creek?
The structure is 75 ft (22.9 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.
Who owns Mallard over Calmus Creek?
It is owned by the County Highway Agency.