I-77 Sbl over NC89
Surry County, North Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-77 Sbl over NC89 in Surry 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 1975, making it 50 years old at the 2025 inventory.
- It carries about 12,750 vehicles a day (traffic count year 2019).
- Its listed owner is the state highway agency.
- It is one of 93 of the 309 inventoried bridges in Surry County rated good (30.1%); 26 (8.4%) 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 December 2021, on a 48-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 → (36.48446, -80.7508)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 224 ft |
| Location | 0.5 MI.N.JCT.SR1397 |
| NBI structure number | 000000001710204 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2021 |
| Inspection interval (item 91) | 48 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 Surry County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I77 over Stewarts Creek | 1975 | 39,000 | Fair |
| US52 over Grassy Creek | 1962 | 28,500 | Poor |
| US52 over Flat Shoals Creek | 1953 | 28,500 | Fair |
| I-77 over Beaverdam Creek | 1975 | 24,000 | Fair |
| I77 over Camp Creek | 1974 | 23,500 | Fair |
| I-77 over Little Fisher River | 1975 | 21,500 | Fair |
All bridges nearby: Surry County, NC bridge conditions · every bridge in Surry County · North Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.