US Bridges

Tucannon Road over Tucannon River

FairPosted for load

Columbia County, Washington · 5.7 SE JCT SR 126 · Structure no. 084422000000000

Built
1974
51 years old, rebuilt 1998
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
100 ft
1 main span
Daily traffic
200
2019 count
Owner
County
County Highway Agency

About this bridge

Tucannon Road over Tucannon River is a prestressed concrete tee beam carrying Tucannon Road over Tucannon River in Columbia County, Washington. It was built in 1974 and reconstructed in 1998, so it is 51 years old, older 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. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, roughly 15% of them trucks, projected to reach 300 by 2041. The structure is 100 ft (30.5 m) long and 28 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesTucannon Road
CrossesTucannon River
Location5.7 SE JCT SR 126
RouteCounty Highway 92330
CountyColumbia County
StateWashington
Coordinates46.39063, -117.69916
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating28.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span98 ft (29.9 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2019)
Projected traffic300 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tucannon Road over Tucannon River built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 1998.

What condition is Tucannon Road over Tucannon 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 October 2023.

How much traffic does Tucannon Road over Tucannon River carry?

About 200 vehicles per day (2019 count), of which roughly 15% are trucks.

How long is Tucannon Road over Tucannon River?

The structure is 100 ft (30.5 m) long with a longest span of 98 ft (29.9 m) and a deck 28 ft wide.

Who owns Tucannon Road over Tucannon River?

It is owned by the County Highway Agency.