SR1143 over Isaac Creek
Alexander County, North Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR1143 over Isaac Creek in Alexander County, North Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1996, making it 29 years old at the 2025 inventory.
- It carries about 3,300 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 48 of the 107 inventoried bridges in Alexander County rated fair (44.9%); 12 (11.2%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (35.81706, -81.32735)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Steel culvert |
| Length | about 41 ft |
| Location | 0.4 Mi. E. Jct. SR1144 |
| NBI structure number | 000000000030105 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Carolina department of transportation.
Busiest bridges in Alexander County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| NC16 over US64 | 1993 | 13,500 | Good |
| NC16 over Lower Little River | 1992 | 12,500 | Good |
| US64 over SR1605 | 1994 | 8,800 | Good |
| US64 NC90 over Lower Little River | 1994 | 8,100 | Good |
| NC16 over Muddy Fork Creek | 1965 | 8,000 | Fair |
| NC16 over Grassy Creek | 1955 | 4,900 | Fair |
All bridges nearby: Alexander County, NC bridge conditions · every bridge in Alexander County · North Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.