US421 to I74 Ramp over Smith Creek
GoodForsyth County, North Carolina · 0.2 Mi.N. JCT.US421N.RAMP · Structure no. 000000000670673
- Built
- 2020
- 5 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 310 ft
- 3 main spans
- Daily traffic
- 350
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US421 to I74 Ramp over Smith Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying US421 to I74 Ramp over Smith Creek in Forsyth County, North Carolina. It was built in 2020, so it is 5 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 350 vehicles a day, roughly 16% of them trucks, projected to reach 700 by 2040. The structure is 310 ft (94.4 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
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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US421 to I74 Ramp over Smith Creek built?
It was built in 2020, making it 5 years old in 2025.
What condition is US421 to I74 Ramp over Smith 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 April 2024.
How much traffic does US421 to I74 Ramp over Smith Creek carry?
About 350 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is US421 to I74 Ramp over Smith Creek?
The structure is 310 ft (94.4 m) long with a longest span of 117 ft (35.6 m) and a deck 33 ft wide.
Who owns US421 to I74 Ramp over Smith Creek?
It is owned by the State Highway Agency.