SR4121 over Deep River
GoodGuilford County, North Carolina · 0.8 Mi. N. JCT.SR1332 · Structure no. 000000000810020
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 195 ft
- 3 main spans
- Daily traffic
- 13,500
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
SR4121 over Deep River is a prestressed concrete stringer/multi-beam or girder carrying SR4121 over Deep River 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 13,500 vehicles a day, roughly 12% of them trucks, projected to reach 27,000 by 2040. The structure is 195 ft (59.4 m) long and 56 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR4121 over Deep River built?
It was built in 2008, making it 17 years old in 2025.
What condition is SR4121 over Deep River 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 2024.
How much traffic does SR4121 over Deep River carry?
About 13,500 vehicles per day (2021 count), of which roughly 12% are trucks.
How long is SR4121 over Deep River?
The structure is 195 ft (59.4 m) long with a longest span of 83 ft (25.2 m) and a deck 56 ft wide.
Who owns SR4121 over Deep River?
It is owned by the State Highway Agency.