SR3300 over I85 US421
GoodGuilford County, North Carolina · 0.6 MI.S.JCT.SR3505 · Structure no. 000000000810805
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 263 ft
- 2 main spans
- Daily traffic
- 16,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
SR3300 over I85 US421 is a steel continuous stringer/multi-beam or girder carrying SR3300 over I85 US421 in Guilford 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 16,000 vehicles a day, roughly 6% of them trucks, projected to reach 32,000 by 2040. The structure is 263 ft (80.1 m) long and 81 ft wide. If it were closed, the detour would be 1.9 mi (3 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 SR3300 over I85 US421 built?
It was built in 2003, making it 22 years old in 2025.
What condition is SR3300 over I85 US421 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 October 2023.
How much traffic does SR3300 over I85 US421 carry?
About 16,000 vehicles per day (2021 count), of which roughly 6% are trucks.
How long is SR3300 over I85 US421?
The structure is 263 ft (80.1 m) long with a longest span of 131 ft (39.9 m) and a deck 81 ft wide.
Who owns SR3300 over I85 US421?
It is owned by the State Highway Agency.