US311 NC770 over Dan River
PoorRockingham County, North Carolina · 0.5 Mi. E. Jct. NC135 · Structure no. 000000001570271
- Built
- 1970
- 55 years old
- Condition
- Poor
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 480 ft
- 8 main spans
- Daily traffic
- 5,100
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
US311 NC770 over Dan River is a steel stringer/multi-beam or girder carrying US311 NC770 over Dan River in Rockingham 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 5,100 vehicles a day, roughly 8% of them trucks, projected to reach 10,200 by 2040. The structure is 480 ft (146.3 m) long and 46 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US311 NC770 over Dan River built?
It was built in 1970, making it 55 years old in 2025.
What condition is US311 NC770 over Dan River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.
How much traffic does US311 NC770 over Dan River carry?
About 5,100 vehicles per day (2021 count), of which roughly 8% are trucks.
How long is US311 NC770 over Dan River?
The structure is 480 ft (146.3 m) long with a longest span of 59 ft (17.9 m) and a deck 46 ft wide.
Who owns US311 NC770 over Dan River?
It is owned by the State Highway Agency.