US Bridges

Sand Road over S.Fk.Palouse River

FairPosted for load

Latah County, Idaho · 1.3 S. 1.1 W. Moscow · Structure no. 000000000029515

Built
1955
70 years old, rebuilt 1972
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
950
2023 count
Owner
Local
Other Local Agency

About this bridge

Sand Road over S.Fk.Palouse River is a steel stringer/multi-beam or girder carrying Sand Road over S.Fk.Palouse River in Latah County, Idaho. It was built in 1955 and reconstructed in 1972, so it is 70 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 950 vehicles a day, roughly 4% of them trucks, projected to reach 1,425 by 2042. The structure is 35 ft (10.7 m) long and 25 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSand Road
CrossesS.Fk.Palouse River
Location1.3 S. 1.1 W. Moscow
RouteCounty Highway 0
CountyLatah County
StateIdaho
Coordinates46.713, -117.02489
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17 US tons
Inventory rating10 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length35 ft (10.7 m)
Longest span34 ft (10.4 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2023)
Projected traffic1,425 by 2042
Trucks4%
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

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$471,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sand Road over S.Fk.Palouse River built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1972.

What condition is Sand Road over S.Fk.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 June 2023.

How much traffic does Sand Road over S.Fk.Palouse River carry?

About 950 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Sand Road over S.Fk.Palouse River?

The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.4 m) and a deck 25 ft wide.

Who owns Sand Road over S.Fk.Palouse River?

It is owned by the Other Local Agency.