US21 over Laurel Branch
GoodAlleghany County, North Carolina · .2 MI.N.JCT.SR1178 · Structure no. 000000000050003
- Built
- 2016
- 9 years old
- Condition
- Good
- inspected February 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 88 ft
- 2 main spans
- Daily traffic
- 3,300
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
US21 over Laurel Branch is a prestressed concrete slab carrying US21 over Laurel Branch in Alleghany County, North Carolina. It was built in 2016, so it is 9 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 8% of them trucks, projected to reach 6,600 by 2040. The structure is 88 ft (26.8 m) long and 45 ft wide. If it were closed, the detour would be 48.5 mi (78 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 | 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 US21 over Laurel Branch built?
It was built in 2016, making it 9 years old in 2025.
What condition is US21 over Laurel Branch 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 February 2023.
How much traffic does US21 over Laurel Branch carry?
About 3,300 vehicles per day (2015 count), of which roughly 8% are trucks.
How long is US21 over Laurel Branch?
The structure is 88 ft (26.8 m) long with a longest span of 59 ft (17.9 m) and a deck 45 ft wide.
Who owns US21 over Laurel Branch?
It is owned by the State Highway Agency.