I73 US421N over SR1424
GoodGuilford County, North Carolina · 1.2 Mi.W. Jct. SR4121 · Structure no. 000000000810862
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 257 ft
- 3 main spans
- Daily traffic
- 28,250
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I73 US421N over SR1424 is a prestressed concrete continuous stringer/multi-beam or girder carrying I73 US421N over SR1424 in Guilford County, North Carolina. It was built in 2008, so it is 17 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 28,250 vehicles a day, roughly 16% of them trucks, projected to reach 56,500 by 2040. The structure is 257 ft (78.3 m) long and 72 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I73 US421N over SR1424 built?
It was built in 2008, making it 17 years old in 2025.
What condition is I73 US421N over SR1424 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 I73 US421N over SR1424 carry?
About 28,250 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is I73 US421N over SR1424?
The structure is 257 ft (78.3 m) long with a longest span of 121 ft (36.8 m) and a deck 72 ft wide.
Who owns I73 US421N over SR1424?
It is owned by the State Highway Agency.