US 421 over Cobbs Fork Sand Creek
FairDecatur County, Indiana · 04.43 S SR 46 · Structure no. 032080
- Built
- 1986
- 39 years old
- Condition
- Fair
- inspected January 2024
- Type
- Slab
- Concrete Continuous
- Length
- 90 ft
- 3 main spans
- Daily traffic
- 4,600
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
US 421 over Cobbs Fork Sand Creek is a concrete continuous slab carrying US 421 over Cobbs Fork Sand Creek in Decatur County, Indiana. It was built in 1986, so it is 39 years old, younger than the Indiana average of 46.6 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 4,600 vehicles a day, roughly 10% of them trucks, projected to reach 5,520 by 2035. The structure is 90 ft (27.4 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Cobbs Fork Sand Creek built?
It was built in 1986, making it 39 years old in 2025.
What condition is US 421 over Cobbs Fork Sand Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.
How much traffic does US 421 over Cobbs Fork Sand Creek carry?
About 4,600 vehicles per day (2014 count), of which roughly 10% are trucks.
How long is US 421 over Cobbs Fork Sand Creek?
The structure is 90 ft (27.4 m) long with a longest span of 36 ft (10.9 m) and a deck 47 ft wide.
Who owns US 421 over Cobbs Fork Sand Creek?
It is owned by the State Highway Agency.