US 421 over Eagle Creek
GoodBoone County, Indiana · 00.17 S SR 32 · Structure no. 032150
- Built
- 1971
- 54 years old, rebuilt 1993
- Condition
- Good
- inspected February 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 165 ft
- 3 main spans
- Daily traffic
- 5,757
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
US 421 over Eagle Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying US 421 over Eagle Creek in Boone County, Indiana. It was built in 1971 and reconstructed in 1993, so it is 54 years old, older than the Indiana average of 46.6 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 5,757 vehicles a day, roughly 12% of them trucks, projected to reach 11,127 by 2034. The structure is 165 ft (50.2 m) long and 46 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 7 Good | Some minor problems. |
| 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 421 over Eagle Creek built?
It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1993.
What condition is US 421 over Eagle 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 2023.
How much traffic does US 421 over Eagle Creek carry?
About 5,757 vehicles per day (2021 count), of which roughly 12% are trucks.
How long is US 421 over Eagle Creek?
The structure is 165 ft (50.2 m) long with a longest span of 54 ft (16.4 m) and a deck 46 ft wide.
Who owns US 421 over Eagle Creek?
It is owned by the State Highway Agency.