Structure 8945 · Grayson County, VA

Route 0805 over Knob Fork Creek

Carries Route 0805 over Knob Fork Creek, .35 To R654; .45 To R604.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT39 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 39 ft across with 4 openings. Lengths and the car on the deck are drawn to the same scale. 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.

Built197452 years old
Length39.0 ft11.9 m
Daily traffic250counted 2022
Last inspectedDecember 2023every 24 months

Location

StateVirginia
CountyGrayson
Location.35 To R654; .45 To R604
CarriesRoute 0805
CrossesKnob Fork Creek
Coordinates36.73257, -81.08706

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length39.0 ft (11.9 m)
Max Span8.9 ft (2.7 m)
Deck Area86.9 sq m
Main Spans4
Year Built1974

Traffic

Avg Daily Traffic250 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000008945

How Bridge Ratings Work

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."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

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.

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