Porterfield HWY SB over N Fork Holston River
FairWashington County, Virginia · 7.37 FR ABIN.-3.90 to Rcl · Structure no. 000000000018860
- Built
- 1964
- 61 years old, rebuilt 1987
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 545 ft
- 6 main spans
- Daily traffic
- 7,879
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Porterfield HWY SB over N Fork Holston River is a steel continuous stringer/multi-beam or girder carrying Porterfield HWY SB over N Fork Holston River in Washington County, Virginia. It was built in 1964 and reconstructed in 1987, so it is 61 years old, older than the Virginia average of 50.7 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 7,879 vehicles a day, roughly 1% of them trucks, projected to reach 11,505 by 2045. The structure is 545 ft (166.1 m) long and 35 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Porterfield HWY SB over N Fork Holston River built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1987.
What condition is Porterfield HWY SB over N Fork Holston River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.
How much traffic does Porterfield HWY SB over N Fork Holston River carry?
About 7,879 vehicles per day (2022 count), of which roughly 1% are trucks.
How long is Porterfield HWY SB over N Fork Holston River?
The structure is 545 ft (166.1 m) long with a longest span of 95 ft (29 m) and a deck 35 ft wide.
Who owns Porterfield HWY SB over N Fork Holston River?
It is owned by the State Highway Agency.