I77 Ramps over US21
Mecklenburg County, North Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I77 Ramps over US21 in Mecklenburg County, North Carolina, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2008, making it 17 years old at the 2025 inventory.
- It carries about 28,000 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 360 of the 753 inventoried bridges in Mecklenburg County rated good (47.8%); 19 (2.5%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated May 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (35.36305, -80.83832)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 262 ft |
| Location | 0.1 Mi. E. Jct. I77 |
| NBI structure number | 000000001190972 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Carolina department of transportation.
Busiest bridges in Mecklenburg County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I85 SR2623 SR2624 over Irwin Creek | 1957 | 190,000 | Fair |
| I77 over Irwin Creek | 1957 | 148,000 | Fair |
| I85 & Ramps over Stony Creek | 1965 | 146,000 | Fair |
| I77 Nbl over West Trade Street | 1972 | 140,000 | Fair |
| I485 Wbl over Sugar Creek | 1993 | 140,000 | Good |
| I485 Ebl Ramp over I77 I485 Sugar Creek | 1994 | 139,500 | Fair |
All bridges nearby: Mecklenburg County, NC bridge conditions · every bridge in Mecklenburg County · North Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.