US Bridges

ELBERTON/2400 over North Fork Palouse River

Fair

Whitman County, Washington · 2.73 MI E Dry Creek · Structure no. 081288000000000

Built
1969
56 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
145 ft
1 main span
Daily traffic
82
2022 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 1969, so it is 56 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 82 vehicles a day, roughly 37% of them trucks, projected to reach 91 by 2044. The structure is 145 ft (44.2 m) long and 28 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesELBERTON/2400
CrossesNorth Fork Palouse River
Location2.73 MI E Dry Creek
RouteCounty Highway 24000
Coordinates46.98303, -117.22247
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating23 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length145 ft (44.2 m)
Longest span143 ft (43.6 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82 (2022)
Projected traffic91 by 2044
Trucks37%
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5.6 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 1969, making it 56 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 82 vehicles per day (2022 count), of which roughly 37% are trucks.

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

The structure is 145 ft (44.2 m) long with a longest span of 143 ft (43.6 m) and a deck 28 ft wide.

Who owns ELBERTON/2400 over North Fork Palouse River?

It is owned by the County Highway Agency.