I277 Sbl US74 Wbl over I77 US21
PoorMecklenburg County, North Carolina · 0.1 MI.S.JCT.NC27 · Structure no. 000000001190048
- Built
- 1970
- 55 years old, rebuilt 2013
- Condition
- Poor
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 400 ft
- 6 main spans
- Daily traffic
- 41,500
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I277 Sbl US74 Wbl over I77 US21 is a steel stringer/multi-beam or girder carrying I277 Sbl US74 Wbl over I77 US21 in Mecklenburg County, North Carolina. It was built in 1970 and reconstructed in 2013, so it is 55 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 41,500 vehicles a day, roughly 16% of them trucks, projected to reach 83,000 by 2040. The structure is 400 ft (121.9 m) long and 45 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I277 Sbl US74 Wbl over I77 US21 built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2013.
What condition is I277 Sbl US74 Wbl over I77 US21 in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.
How much traffic does I277 Sbl US74 Wbl over I77 US21 carry?
About 41,500 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is I277 Sbl US74 Wbl over I77 US21?
The structure is 400 ft (121.9 m) long with a longest span of 84 ft (25.6 m) and a deck 45 ft wide.
Who owns I277 Sbl US74 Wbl over I77 US21?
It is owned by the State Highway Agency.