US Bridges

North Fork Knob RD over North Fork Clinch River

Fair

Scott County, Virginia · 1.40 FR 621-0.10 to 600 · Structure no. 000000000016696

Built
1975
50 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
167 ft
3 main spans
Daily traffic
112
2022 count
Owner
State
State Highway Agency

About this bridge

North Fork Knob RD over North Fork Clinch River is a steel stringer/multi-beam or girder carrying North Fork Knob RD over North Fork Clinch River in Scott County, Virginia. It was built in 1975, so it is 50 years old, younger 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 112 vehicles a day, projected to reach 125 by 2042. The structure is 167 ft (50.9 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesNorth Fork Knob RD
CrossesNorth Fork Clinch River
Location1.40 FR 621-0.10 to 600
RouteCounty Highway 622
CountyScott County
StateVirginia
Coordinates36.6324, -82.90525
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating68 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length167 ft (50.9 m)
Longest span56 ft (17.1 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112 (2022)
Projected traffic125 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was North Fork Knob RD over North Fork Clinch River built?

It was built in 1975, making it 50 years old in 2025.

What condition is North Fork Knob RD over North Fork Clinch 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 September 2024.

How much traffic does North Fork Knob RD over North Fork Clinch River carry?

About 112 vehicles per day (2022 count).

How long is North Fork Knob RD over North Fork Clinch River?

The structure is 167 ft (50.9 m) long with a longest span of 56 ft (17.1 m) and a deck 30 ft wide.

Who owns North Fork Knob RD over North Fork Clinch River?

It is owned by the State Highway Agency.