Structure 1630387 · Sampson County, NC
Carries Us421 over Williams Old Mill Branch, 0.2 Mi. S. Of Jct. Sr1839.
A culvert 25 ft across with 3 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.
| State | North Carolina |
| County | Sampson |
| Location | 0.2 Mi. S. Of Jct. Sr1839 |
| Carries | Us421 |
| Crosses | Williams Old Mill Branch |
| Coordinates | 35.00825, -78.34114 |
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 7.9 ft (2.4 m) |
| Deck Area | 164.2 sq m |
| Main Spans | 3 |
| Year Built | 1977 |
| Avg Daily Traffic | 7,500 (2021) |
| Truck Traffic | 12% |
| Lanes On Bridge | 4 |
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 000000001630387 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.