US Bridges

Wolf Fork Road over Wolf Fork

Fair

Columbia County, Washington · 5 S JCT 91150 · Structure no. 086110000000000

Built
1995
30 years old
Condition
Fair
inspected October 2024
Type
Channel Beam
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

Wolf Fork Road over Wolf Fork is a prestressed concrete channel beam carrying Wolf Fork Road over Wolf Fork in Columbia County, Washington. It was built in 1995, so it is 30 years old, younger than the Washington average of 49.8 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 50 vehicles a day, roughly 15% of them trucks, projected to reach 100 by 2042. The structure is 56 ft (17.1 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesWolf Fork Road
CrossesWolf Fork
Location5 S JCT 91150
RouteCounty Highway 13890
CountyColumbia County
StateWashington
Coordinates46.21356, -117.87103
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating38.9 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span54 ft (16.5 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic100 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$692,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Wolf Fork Road over Wolf Fork built?

It was built in 1995, making it 30 years old in 2025.

What condition is Wolf Fork Road over Wolf Fork 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 October 2024.

How much traffic does Wolf Fork Road over Wolf Fork carry?

About 50 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Wolf Fork Road over Wolf Fork?

The structure is 56 ft (17.1 m) long with a longest span of 54 ft (16.5 m) and a deck 25 ft wide.

Who owns Wolf Fork Road over Wolf Fork?

It is owned by the County Highway Agency.