US Bridges

SAND/9060 over South Fork Palouse River

Good

Whitman County, Washington · 4.20 MI SE Johnson · Structure no. 088970000000000

Built
2017
8 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
707
2022 count
Owner
County
County Highway Agency

About this bridge

SAND/9060 over South Fork Palouse River is a prestressed concrete stringer/multi-beam or girder carrying SAND/9060 over South Fork Palouse River in Whitman County, Washington. It was built in 2017, so it is 8 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 707 vehicles a day, roughly 6% of them trucks, projected to reach 781 by 2042. The structure is 65 ft (19.8 m) long and 30 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesSAND/9060
CrossesSouth Fork Palouse River
Location4.20 MI SE Johnson
RouteCounty Highway 90600
Coordinates46.68171, -117.07442
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation7: Better than present minimum criteria
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 rating51.5 US tons
Inventory rating30.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length65 ft (19.8 m)
Longest span64 ft (19.5 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic707 (2022)
Projected traffic781 by 2042
Trucks6%
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$988,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SAND/9060 over South Fork Palouse River built?

It was built in 2017, making it 8 years old in 2025.

What condition is SAND/9060 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 August 2023.

How much traffic does SAND/9060 over South Fork Palouse River carry?

About 707 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SAND/9060 over South Fork Palouse River?

The structure is 65 ft (19.8 m) long with a longest span of 64 ft (19.5 m) and a deck 30 ft wide.

Who owns SAND/9060 over South Fork Palouse River?

It is owned by the County Highway Agency.