US Bridges

ELBERTON/2400 over North Fork Palouse River

Fair

Whitman County, Washington · 1.97 MI E Dry Creek · Structure no. 081274000000000

Built
1987
38 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
155 ft
1 main span
Daily traffic
182
2021 count
Owner
County
County Highway Agency

About this bridge

ELBERTON/2400 over North Fork Palouse River is a prestressed concrete tee beam carrying ELBERTON/2400 over North Fork Palouse River in Whitman County, Washington. It was built in 1987, so it is 38 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 5 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 182 vehicles a day, roughly 25% of them trucks, projected to reach 182 by 2044. The structure is 155 ft (47.2 m) long and 30 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesELBERTON/2400
CrossesNorth Fork Palouse River
Location1.97 MI E Dry Creek
RouteCounty Highway 24000
Coordinates46.97693, -117.23398
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.9 US tons
Inventory rating41.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length155 ft (47.2 m)
Longest span153 ft (46.5 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic182 (2021)
Projected traffic182 by 2044
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ELBERTON/2400 over North Fork Palouse River built?

It was built in 1987, making it 38 years old in 2025.

What condition is ELBERTON/2400 over North Fork 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 2023.

How much traffic does ELBERTON/2400 over North Fork Palouse River carry?

About 182 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is ELBERTON/2400 over North Fork Palouse River?

The structure is 155 ft (47.2 m) long with a longest span of 153 ft (46.5 m) and a deck 30 ft wide.

Who owns ELBERTON/2400 over North Fork Palouse River?

It is owned by the County Highway Agency.