US Bridges

SAND/9060 over South Fork Palouse River

Good

Whitman County, Washington · 6.43MI NE Johnson · Structure no. 087330000000000

Built
2005
20 years old
Condition
Good
inspected December 2023
Type
Tee Beam
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
624
2022 count
Owner
County
County Highway Agency

About this bridge

SAND/9060 over South Fork Palouse River is a prestressed concrete tee beam carrying SAND/9060 over South Fork Palouse River in Whitman County, Washington. It was built in 2005, so it is 20 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 624 vehicles a day, roughly 8% of them trucks, projected to reach 689 by 2044. The structure is 82 ft (25 m) long and 34 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesSAND/9060
CrossesSouth Fork Palouse River
Location6.43MI NE Johnson
RouteCounty Highway 90600
Coordinates46.70065, -117.0414
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating100 US tons
Inventory rating60 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length82 ft (25 m)
Longest span80 ft (24.4 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic624 (2022)
Projected traffic689 by 2044
Trucks8%
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$3.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 2005, making it 20 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 December 2023.

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

About 624 vehicles per day (2022 count), of which roughly 8% are trucks.

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

The structure is 82 ft (25 m) long with a longest span of 80 ft (24.4 m) and a deck 34 ft wide.

Who owns SAND/9060 over South Fork Palouse River?

It is owned by the County Highway Agency.