I-77 US21 Sbl over SR1128
GoodMecklenburg County, North Carolina · 1.8 Mi. S. Jct. SR1138 · Structure no. 000000001190046
- Built
- 1993
- 32 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 181 ft
- 3 main spans
- Daily traffic
- 39,750
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
I-77 US21 Sbl over SR1128 is a steel stringer/multi-beam or girder carrying I-77 US21 Sbl over SR1128 in Mecklenburg County, North Carolina. It was built in 1993, so it is 32 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 39,750 vehicles a day, roughly 16% of them trucks, projected to reach 79,500 by 2040. The structure is 181 ft (55.1 m) long and 71 ft wide.
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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-77 US21 Sbl over SR1128 built?
It was built in 1993, making it 32 years old in 2025.
What condition is I-77 US21 Sbl over SR1128 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 August 2023.
How much traffic does I-77 US21 Sbl over SR1128 carry?
About 39,750 vehicles per day (2020 count), of which roughly 16% are trucks.
How long is I-77 US21 Sbl over SR1128?
The structure is 181 ft (55.1 m) long with a longest span of 119 ft (36.2 m) and a deck 71 ft wide.
Who owns I-77 US21 Sbl over SR1128?
It is owned by the State Highway Agency.