US421 Nbl over Dunn Erwin Rail Trail
FairHarnett County, North Carolina · 0.9 MI.S.JCT.NC55 · Structure no. 000000000850023
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected February 2025
- Type
- Slab
- Concrete Continuous
- Length
- 112 ft
- 5 main spans
- Daily traffic
- 6,250
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
US421 Nbl over Dunn Erwin Rail Trail is a concrete continuous slab carrying US421 Nbl over Dunn Erwin Rail Trail in Harnett County, North Carolina. It was built in 1957, so it is 68 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 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 6,250 vehicles a day, roughly 12% of them trucks, projected to reach 12,500 by 2040. The structure is 112 ft (34.1 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US421 Nbl over Dunn Erwin Rail Trail built?
It was built in 1957, making it 68 years old in 2025.
What condition is US421 Nbl over Dunn Erwin Rail Trail 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 February 2025.
How much traffic does US421 Nbl over Dunn Erwin Rail Trail carry?
About 6,250 vehicles per day (2019 count), of which roughly 12% are trucks.
How long is US421 Nbl over Dunn Erwin Rail Trail?
The structure is 112 ft (34.1 m) long with a longest span of 21 ft (6.4 m) and a deck 33 ft wide.
Who owns US421 Nbl over Dunn Erwin Rail Trail?
It is owned by the State Highway Agency.