I77 over Irwin Creek
FairMecklenburg County, North Carolina · 2.4 Mi. N. Jct. NC16 · Structure no. 000000001190300
- Built
- 1957
- 68 years old, rebuilt 1971
- Condition
- Fair
- inspected August 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 29 ft
- 2 main spans
- Daily traffic
- 148,000
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I77 over Irwin Creek is a concrete continuous culvert carrying I77 over Irwin Creek in Mecklenburg County, North Carolina. It was built in 1957 and reconstructed in 1971, so it is 68 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 148,000 vehicles a day, roughly 16% of them trucks, projected to reach 296,000 by 2040. The structure is 29 ft (8.8 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I77 over Irwin Creek built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1971.
What condition is I77 over Irwin Creek 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 I77 over Irwin Creek carry?
About 148,000 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is I77 over Irwin Creek?
The structure is 29 ft (8.8 m) long with a longest span of 10 ft (3 m).
Who owns I77 over Irwin Creek?
It is owned by the State Highway Agency.