Cotter RD over Miller Creek
FairBlack Hawk County, Iowa · 87-12-04-02-10 · Structure no. 000000000073961
- Built
- 1986
- 39 years old
- Condition
- Fair
- inspected November 2023
- Type
- Slab
- Concrete Continuous
- Length
- 100 ft
- 3 main spans
- Daily traffic
- 59
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Cotter RD over Miller Creek is a concrete continuous slab carrying Cotter RD over Miller Creek in Black Hawk County, Iowa. It was built in 1986, so it is 39 years old, younger 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 59 vehicles a day, projected to reach 59 by 2043. The structure is 100 ft (30.5 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 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 Cotter RD over Miller Creek built?
It was built in 1986, making it 39 years old in 2025.
What condition is Cotter RD over Miller 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 November 2023.
How much traffic does Cotter RD over Miller Creek carry?
About 59 vehicles per day (2022 count).
How long is Cotter RD over Miller Creek?
The structure is 100 ft (30.5 m) long with a longest span of 39 ft (11.9 m) and a deck 25 ft wide.
Who owns Cotter RD over Miller Creek?
It is owned by the County Highway Agency.