NC135 over Mayo River
Rockingham County, North Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- NC135 over Mayo River in Rockingham County, North Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1979, making it 46 years old at the 2025 inventory.
- It carries about 6,900 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 79 of the 231 inventoried bridges in Rockingham County rated fair (34.2%); 26 (11.3%) 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 August 2023, on a 24-month routine inspection cycle.
- 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 → (36.40746, -79.96559)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 253 ft |
| Location | 0.1 Mi. E. Jct. US220B |
| NBI structure number | 000000001570043 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Carolina department of transportation.
Busiest bridges in Rockingham County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US29N over Haw River | 1968 | 29,500 | Fair |
| US220 over Hogans Creek | 1932 | 24,500 | Good |
| US29 over Little Troublesome Creek | 1968 | 24,500 | Poor |
| US29 over Candy Creek | 1968 | 23,500 | Good |
| US220 over Troublesome Creek | 2015 | 21,000 | Good |
| I73 US220 N.& S. over Troublesome Creek | 2015 | 21,000 | Good |
All bridges nearby: Rockingham County, NC bridge conditions · every bridge in Rockingham County · North Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.