US Bridges

County Route 20 over Sixmile Creek

FairPosted for load

Boone County, West Virginia · 3.30 MI E of US 119 · Structure no. 00000000003A059

Built
1993
32 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
27 ft
1 main span
Daily traffic
650
2022 count
Owner
State
State Highway Agency

About this bridge

County Route 20 over Sixmile Creek is a wood or timber stringer/multi-beam or girder carrying County Route 20 over Sixmile Creek in Boone County, West Virginia. It was built in 1993, so it is 32 years old, younger than the West Virginia average of 44.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 650 vehicles a day, roughly 8% of them trucks, projected to reach 858 by 2042. The structure is 27 ft (8.2 m) long and 26 ft wide.

Location

Open in Google Maps
CarriesCounty Route 20
CrossesSixmile Creek
Location3.30 MI E of US 119
RouteCounty Highway 20
CountyBoone County
StateWest Virginia
Coordinates37.98919, -81.8455
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2022)
Projected traffic858 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 County Route 20 over Sixmile Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is County Route 20 over Sixmile Creek 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 February 2024.

How much traffic does County Route 20 over Sixmile Creek carry?

About 650 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is County Route 20 over Sixmile Creek?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns County Route 20 over Sixmile Creek?

It is owned by the State Highway Agency.