312th ST over Mud Creek
GoodHenry County, Iowa · 070052203 · Structure no. 000000000179941
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected February 2024
- Type
- Slab
- Concrete Continuous
- Length
- 93 ft
- 3 main spans
- Daily traffic
- 80
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
312th ST over Mud Creek is a concrete continuous slab carrying 312th ST over Mud Creek in Henry County, Iowa. It was built in 2011, so it is 14 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 80 vehicles a day, projected to reach 80 by 2044. The structure is 93 ft (28.3 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 312th ST over Mud Creek built?
It was built in 2011, making it 14 years old in 2025.
What condition is 312th ST over Mud 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 February 2024.
How much traffic does 312th ST over Mud Creek carry?
About 80 vehicles per day (2022 count).
How long is 312th ST over Mud Creek?
The structure is 93 ft (28.3 m) long with a longest span of 35 ft (10.7 m) and a deck 33 ft wide.
Who owns 312th ST over Mud Creek?
It is owned by the County Highway Agency.