US421 over Big Alamance Creek
GoodGuilford County, North Carolina · 2.3 Mi. N. Jct. NC62 · Structure no. 000000000810281
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected December 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 26 ft
- 2 main spans
- Daily traffic
- 23,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
US421 over Big Alamance Creek is a concrete continuous culvert carrying US421 over Big Alamance Creek in Guilford County, North Carolina. It was built in 1970, so it is 55 years old, older than the North Carolina average of 38.7 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 23,000 vehicles a day, roughly 14% of them trucks, projected to reach 46,000 by 2040. The structure is 26 ft (7.9 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US421 over Big Alamance Creek built?
It was built in 1970, making it 55 years old in 2025.
What condition is US421 over Big Alamance 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 December 2023.
How much traffic does US421 over Big Alamance Creek carry?
About 23,000 vehicles per day (2021 count), of which roughly 14% are trucks.
How long is US421 over Big Alamance Creek?
The structure is 26 ft (7.9 m) long with a longest span of 9 ft (2.7 m).
Who owns US421 over Big Alamance Creek?
It is owned by the State Highway Agency.