Ia 8 over Coon Creek
GoodTama County, Iowa · 0.5 Mile East of US 63 · Structure no. 000000000049661
- Built
- 1989
- 36 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 139 ft
- 3 main spans
- Daily traffic
- 1,950
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 8 over Coon Creek is a prestressed concrete stringer/multi-beam or girder carrying Ia 8 over Coon Creek in Tama County, Iowa. It was built in 1989, so it is 36 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 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 1,950 vehicles a day, roughly 11% of them trucks, projected to reach 1,950 by 2043. The structure is 139 ft (42.4 m) long and 50 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 8 over Coon Creek built?
It was built in 1989, making it 36 years old in 2025.
What condition is Ia 8 over Coon 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 Ia 8 over Coon Creek carry?
About 1,950 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is Ia 8 over Coon Creek?
The structure is 139 ft (42.4 m) long with a longest span of 57 ft (17.4 m) and a deck 50 ft wide.
Who owns Ia 8 over Coon Creek?
It is owned by the State Highway Agency.