NC171 over Mill Swamp
GoodBeaufort County, North Carolina · 3.9MI.NE. of JCT.US17 · Structure no. 000000000130012
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected June 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 62 ft
- 1 main span
- Daily traffic
- 3,300
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
NC171 over Mill Swamp is a prestressed concrete slab carrying NC171 over Mill Swamp in Beaufort County, North Carolina. It was built in 2003, so it is 22 years old, younger 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 3,300 vehicles a day, roughly 7% of them trucks, projected to reach 6,600 by 2040. The structure is 62 ft (18.8 m) long and 42 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NC171 over Mill Swamp built?
It was built in 2003, making it 22 years old in 2025.
What condition is NC171 over Mill Swamp 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 June 2024.
How much traffic does NC171 over Mill Swamp carry?
About 3,300 vehicles per day (2022 count), of which roughly 7% are trucks.
How long is NC171 over Mill Swamp?
The structure is 62 ft (18.8 m) long with a longest span of 59 ft (17.9 m) and a deck 42 ft wide.
Who owns NC171 over Mill Swamp?
It is owned by the State Highway Agency.