US Bridges

Old SR #26/7205 over Palouse River

Fair

Whitman County, Washington · 3.12 MI NE Adams Cnty Lne · Structure no. 083678000000000

Built
1940
85 years old, rebuilt 1997
Condition
Fair
inspected November 2024
Type
Truss - Thru
Steel
Length
194 ft
1 main span
Daily traffic
146
2015 count
Owner
County
County Highway Agency

About this bridge

Old SR #26/7205 over Palouse River is a steel truss - thru carrying Old SR #26/7205 over Palouse River in Whitman County, Washington. It was built in 1940 and reconstructed in 1997, so it is 85 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 146 vehicles a day, roughly 25% of them trucks, projected to reach 58 by 2039. The structure is 194 ft (59.1 m) long and 26 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesOld SR #26/7205
CrossesPalouse River
Location3.12 MI NE Adams Cnty Lne
RouteCounty Highway 72050
CountyWhitman County
StateWashington
Coordinates46.7588, -118.14785
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 15
Structure length194 ft (59.1 m)
Longest span98 ft (29.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic146 (2015)
Projected traffic58 by 2039
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old SR #26/7205 over Palouse River built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1997.

What condition is Old SR #26/7205 over Palouse 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 November 2024.

How much traffic does Old SR #26/7205 over Palouse River carry?

About 146 vehicles per day (2015 count), of which roughly 25% are trucks.

How long is Old SR #26/7205 over Palouse River?

The structure is 194 ft (59.1 m) long with a longest span of 98 ft (29.9 m) and a deck 26 ft wide.

Who owns Old SR #26/7205 over Palouse River?

It is owned by the County Highway Agency.