US421 S over Deep River
FairChatham County, North Carolina · 0.9 Mi. S. Jct. SR2146 · Structure no. 000000000370050
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 480 ft
- 8 main spans
- Daily traffic
- 9,250
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US421 S over Deep River is a prestressed concrete continuous stringer/multi-beam or girder carrying US421 S over Deep River in Chatham County, North Carolina. It was built in 1973, so it is 52 years old, older than the North Carolina average of 38.7 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 9,250 vehicles a day, roughly 14% of them trucks, projected to reach 18,500 by 2040. The structure is 480 ft (146.3 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US421 S over Deep River built?
It was built in 1973, making it 52 years old in 2025.
What condition is US421 S over Deep River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.
How much traffic does US421 S over Deep River carry?
About 9,250 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is US421 S over Deep River?
The structure is 480 ft (146.3 m) long with a longest span of 51 ft (15.5 m) and a deck 42 ft wide.
Who owns US421 S over Deep River?
It is owned by the State Highway Agency.