US 63 over 12 Mile Creek
GoodTama County, Iowa · 1.1 MI S of S JCT SR D65 · Structure no. 000000000049640
- Built
- 1956
- 69 years old, rebuilt 2017
- Condition
- Good
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 183 ft
- 3 main spans
- Daily traffic
- 3,770
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 63 over 12 Mile Creek is a steel continuous stringer/multi-beam or girder carrying US 63 over 12 Mile Creek in Tama County, Iowa. It was built in 1956 and reconstructed in 2017, so it is 69 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 3,770 vehicles a day, roughly 16% of them trucks, projected to reach 3,770 by 2042. The structure is 183 ft (55.9 m) long and 32 ft wide. If it were closed, the detour would be 11.8 mi (19 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 63 over 12 Mile Creek built?
It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2017.
What condition is US 63 over 12 Mile 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 US 63 over 12 Mile Creek carry?
About 3,770 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is US 63 over 12 Mile Creek?
The structure is 183 ft (55.9 m) long with a longest span of 70 ft (21.3 m) and a deck 32 ft wide.
Who owns US 63 over 12 Mile Creek?
It is owned by the State Highway Agency.