Porterfield HWY SB over N Fork Holston River
Fair Condition62 years old7,879 vehicles/day
Location
| State | Virginia |
| County | Washington |
| Location | 7.37 Fr Abin.-3.90 To Rcl |
| Carries | Porterfield HWY SB |
| Crosses | N Fork Holston River |
| Coordinates | 36.77444, -82.07285 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 544.9 ft (166.1 m) |
| Max Span | 95.1 ft (29 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 1777.3 sq m |
| Main Spans | 6 |
| Year Built | 1964 (reconstructed 1987) |
Traffic
| Avg Daily Traffic | 7,879 (2022) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000018860 |