Hills Mill RD over Boulder Creek
FairLinn County, Iowa · 086052004 · Structure no. 000000000222781
- Built
- 2003
- 22 years old
- Condition
- Fair
- inspected September 2024
- Type
- Slab
- Wood or Timber
- Length
- 97 ft
- 4 main spans
- Daily traffic
- 20
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Hills Mill RD over Boulder Creek is a wood or timber slab carrying Hills Mill RD over Boulder Creek in Linn County, Iowa. It was built in 2003, so it is 22 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 20 vehicles a day, projected to reach 20 by 2044. The structure is 97 ft (29.6 m) long and 32 ft wide.
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Hills Mill RD over Boulder Creek built?
It was built in 2003, making it 22 years old in 2025.
What condition is Hills Mill RD over Boulder 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 September 2024.
How much traffic does Hills Mill RD over Boulder Creek carry?
About 20 vehicles per day (2022 count).
How long is Hills Mill RD over Boulder Creek?
The structure is 97 ft (29.6 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.
Who owns Hills Mill RD over Boulder Creek?
It is owned by the County Highway Agency.