US Bridges

Spring Valley Road over Knob Fork Creek

Good

Grayson County, Virginia · .1 to R604;.7 to R654 · Structure no. 000000000008950

Built
1985
40 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
250
2022 count
Owner
State
State Highway Agency

About this bridge

Spring Valley Road over Knob Fork Creek is a concrete slab carrying Spring Valley Road over Knob Fork Creek in Grayson County, Virginia. It was built in 1985, so it is 40 years old, younger than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 250 vehicles a day, projected to reach 279 by 2042. The structure is 27 ft (8.2 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSpring Valley Road
CrossesKnob Fork Creek
Location.1 to R604;.7 to R654
RouteCounty Highway 805
CountyGrayson County
StateVirginia
Coordinates36.73775, -81.08911
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating96 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2022)
Projected traffic279 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Spring Valley Road over Knob Fork Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Spring Valley Road over Knob Fork Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Spring Valley Road over Knob Fork Creek carry?

About 250 vehicles per day (2022 count).

How long is Spring Valley Road over Knob Fork Creek?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 27 ft wide.

Who owns Spring Valley Road over Knob Fork Creek?

It is owned by the State Highway Agency.