Old 21 Road over Mill Creek
GoodCherokee County, Iowa · 092402306 · Structure no. 000000000108951
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 246 ft
- 3 main spans
- Daily traffic
- 120
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Old 21 Road over Mill Creek is a prestressed concrete stringer/multi-beam or girder carrying Old 21 Road over Mill Creek in Cherokee County, Iowa. It was built in 2006, so it is 19 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 120 vehicles a day, projected to reach 120 by 2043. The structure is 246 ft (75 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old 21 Road over Mill Creek built?
It was built in 2006, making it 19 years old in 2025.
What condition is Old 21 Road over Mill Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.
How much traffic does Old 21 Road over Mill Creek carry?
About 120 vehicles per day (2022 count).
How long is Old 21 Road over Mill Creek?
The structure is 246 ft (75 m) long with a longest span of 81 ft (24.7 m) and a deck 32 ft wide.
Who owns Old 21 Road over Mill Creek?
It is owned by the County Highway Agency.