US421S NC55 over Dunn-erwin Rail Trail
Harnett County, North Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US421S NC55 over Dunn-erwin Rail Trail in Harnett County, North Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1957, making it 68 years old at the 2025 inventory.
- It carries about 14,500 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 50 of the 137 inventoried bridges in Harnett County rated fair (36.5%); 5 (3.6%) 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 February 2025, 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 → (35.32952, -78.66297)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 112 ft |
| Location | 0.1 Mi. N. of Jct. SR1703 |
| NBI structure number | 000000000850022 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2025 |
| 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 Harnett County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I95 over Stoney Run | 1965 | 51,500 | Fair |
| I95N over US421 NC55 | 1955 | 25,500 | Fair |
| I95S over US421 NC55 | 1955 | 25,500 | Poor |
| NC87 over Gum Swamp | 1928 | 24,500 | Fair |
| NC87 over Cypress Creek | 1928 | 24,500 | Fair |
| US421 NC27 over West Buies Creek | 1958 | 18,000 | Good |
All bridges nearby: Harnett County, NC bridge conditions · every bridge in Harnett County · North Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.