US Bridges

PARVIN/5000 over South Fork Palouse River

Good

Whitman County, Washington · 3.28 MI E SR 195 · Structure no. 083818000000000

Built
1992
33 years old
Condition
Good
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
125 ft
1 main span
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

PARVIN/5000 over South Fork Palouse River is a prestressed concrete tee beam carrying PARVIN/5000 over South Fork Palouse River in Whitman County, Washington. It was built in 1992, so it is 33 years old, younger 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.

It carries about 50 vehicles a day, roughly 25% of them trucks, projected to reach 50 by 2039. The structure is 125 ft (38.1 m) long and 31 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesPARVIN/5000
CrossesSouth Fork Palouse River
Location3.28 MI E SR 195
RouteCounty Highway 50000
Coordinates46.8478, -117.28443
Functional classRural Minor Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.1 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span123 ft (37.5 m)
Deck width31 ft (9.4 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic50 by 2039
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$4.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was PARVIN/5000 over South Fork Palouse River built?

It was built in 1992, making it 33 years old in 2025.

What condition is PARVIN/5000 over South 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 2024.

How much traffic does PARVIN/5000 over South Fork Palouse River carry?

About 50 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is PARVIN/5000 over South Fork Palouse River?

The structure is 125 ft (38.1 m) long with a longest span of 123 ft (37.5 m) and a deck 31 ft wide.

Who owns PARVIN/5000 over South Fork Palouse River?

It is owned by the County Highway Agency.