US Bridges

GLENWOOD/2450 over Palouse River

Fair

Whitman County, Washington · 2.66 MI NW SR 272 · Structure no. 084359000000000

Built
1967
58 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
156 ft
2 main spans
Daily traffic
75
2021 count
Owner
County
County Highway Agency

About this bridge

GLENWOOD/2450 over Palouse River is a prestressed concrete tee beam carrying GLENWOOD/2450 over Palouse River in Whitman County, Washington. It was built in 1967, so it is 58 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 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 75 vehicles a day, roughly 35% of them trucks, projected to reach 75 by 2044. The structure is 156 ft (47.5 m) long and 24 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesGLENWOOD/2450
CrossesPalouse River
Location2.66 MI NW SR 272
RouteCounty Highway 24500
CountyWhitman County
StateWashington
Coordinates46.93018, -117.28525
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating32.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length156 ft (47.5 m)
Longest span81 ft (24.7 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2021)
Projected traffic75 by 2044
Trucks35%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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$6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was GLENWOOD/2450 over Palouse River built?

It was built in 1967, making it 58 years old in 2025.

What condition is GLENWOOD/2450 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 2023.

How much traffic does GLENWOOD/2450 over Palouse River carry?

About 75 vehicles per day (2021 count), of which roughly 35% are trucks.

How long is GLENWOOD/2450 over Palouse River?

The structure is 156 ft (47.5 m) long with a longest span of 81 ft (24.7 m) and a deck 24 ft wide.

Who owns GLENWOOD/2450 over Palouse River?

It is owned by the County Highway Agency.