US Bridges

East Fork Road over E.Fk. of S.Fk.Salmon Rvr

Fair

Valley County, Idaho · At Yellow Pine · Structure no. 000000000020170

Built
1955
70 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
105 ft
3 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

East Fork Road over E.Fk. of S.Fk.Salmon Rvr is a concrete continuous tee beam carrying East Fork Road over E.Fk. of S.Fk.Salmon Rvr in Valley County, Idaho. It was built in 1955, 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.

It carries about 40 vehicles a day, roughly 33% of them trucks, projected to reach 60 by 2042. The structure is 105 ft (32 m) long and 30 ft wide. If it were closed, the detour would be 55.9 mi (90 km).

CarriesEast Fork Road
CrossesE.Fk. of S.Fk.Salmon Rvr
LocationAt Yellow Pine
RouteCounty Highway 0
StateIdaho
Coordinates44.96308, -115.50169
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length105 ft (32 m)
Longest span65 ft (19.8 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic60 by 2042
Trucks33%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.9 mi (90 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was East Fork Road over E.Fk. of S.Fk.Salmon Rvr built?

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

What condition is East Fork Road over E.Fk. of S.Fk.Salmon Rvr 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 August 2024.

How much traffic does East Fork Road over E.Fk. of S.Fk.Salmon Rvr carry?

About 40 vehicles per day (2023 count), of which roughly 33% are trucks.

How long is East Fork Road over E.Fk. of S.Fk.Salmon Rvr?

The structure is 105 ft (32 m) long with a longest span of 65 ft (19.8 m) and a deck 30 ft wide.

Who owns East Fork Road over E.Fk. of S.Fk.Salmon Rvr?

It is owned by the County Highway Agency.