US Bridges

Tucannon Road over Tucannon River

Fair

Columbia County, Washington · 1.2 SE JCT SR126 · Structure no. 082425000000000

Built
1963
62 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
57 ft
1 main span
Daily traffic
200
2019 count
Owner
County
County Highway Agency

About this bridge

Tucannon Road over Tucannon River is a steel stringer/multi-beam or girder carrying Tucannon Road over Tucannon River in Columbia County, Washington. It was built in 1963, so it is 62 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.

It carries about 200 vehicles a day, roughly 15% of them trucks, projected to reach 300 by 2041. The structure is 57 ft (17.4 m) long and 24 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesTucannon Road
CrossesTucannon River
Location1.2 SE JCT SR126
RouteCounty Highway 92330
CountyColumbia County
StateWashington
Coordinates46.43047, -117.72883
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span56 ft (17.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 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 closed21.1 mi (34 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$704,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tucannon Road over Tucannon River built?

It was built in 1963, making it 62 years old in 2025.

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 57 ft (17.4 m) long with a longest span of 56 ft (17.1 m) and a deck 24 ft wide.

Who owns Tucannon Road over Tucannon River?

It is owned by the County Highway Agency.