US Bridges

SAND/9060 over Unnamed Drainage

GoodPosted for load

Whitman County, Washington · 5.01MI SE Johnson · Structure no. 082560000000000

Built
1976
49 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
199
2023 count
Owner
County
County Highway Agency

About this bridge

SAND/9060 over Unnamed Drainage is a prestressed concrete stringer/multi-beam or girder carrying SAND/9060 over Unnamed Drainage in Whitman County, Washington. It was built in 1976, so it is 49 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. Its operating status is: posted for load restriction.

It carries about 199 vehicles a day, roughly 25% of them trucks, projected to reach 203 by 2042. The structure is 36 ft (11 m) long and 28 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesSAND/9060
CrossesUnnamed Drainage
Location5.01MI SE Johnson
RouteCounty Highway 90600
Coordinates46.68467, -117.05842
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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to 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 rating39.2 US tons
Inventory rating27.4 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span34 ft (10.5 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic199 (2023)
Projected traffic203 by 2042
Trucks25%
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$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SAND/9060 over Unnamed Drainage built?

It was built in 1976, making it 49 years old in 2025.

What condition is SAND/9060 over Unnamed Drainage 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 January 2025.

How much traffic does SAND/9060 over Unnamed Drainage carry?

About 199 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is SAND/9060 over Unnamed Drainage?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.5 m) and a deck 28 ft wide.

Who owns SAND/9060 over Unnamed Drainage?

It is owned by the County Highway Agency.