US Bridges

Oral SMITH/2590 over North Fork Palouse River

GoodPosted for load

Whitman County, Washington · 0.01 MI NE Draper-Brown · Structure no. 081178000000000

Built
1975
50 years old
Condition
Good
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
104 ft
1 main span
Daily traffic
20
2021 count
Owner
County
County Highway Agency

About this bridge

Oral SMITH/2590 over North Fork Palouse River is a prestressed concrete tee beam carrying Oral SMITH/2590 over North Fork Palouse River in Whitman County, Washington. It was built in 1975, so it is 50 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 25% of them trucks, projected to reach 21 by 2044. The structure is 104 ft (31.7 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesOral SMITH/2590
CrossesNorth Fork Palouse River
Location0.01 MI NE Draper-Brown
RouteCounty Highway 25900
Coordinates46.98033, -117.21847
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating40.3 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span103 ft (31.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2021)
Projected traffic21 by 2044
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Oral SMITH/2590 over North Fork Palouse River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Oral SMITH/2590 over North Fork Palouse River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Oral SMITH/2590 over North Fork Palouse River carry?

About 20 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is Oral SMITH/2590 over North Fork Palouse River?

The structure is 104 ft (31.7 m) long with a longest span of 103 ft (31.4 m) and a deck 24 ft wide.

Who owns Oral SMITH/2590 over North Fork Palouse River?

It is owned by the County Highway Agency.