US Bridges

Fdr over East Fork Salmon River

Good

Custer County, Idaho · 20 Miles from Mouth of R. · Structure no. 041403000001023

Built
1989
36 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Fdr over East Fork Salmon River is a prestressed concrete tee beam carrying Fdr over East Fork Salmon River in Custer County, Idaho. It was built in 1989, so it is 36 years old, younger than the Idaho average of 45.3 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 70 ft (21.3 m) long and 16 ft wide.

CarriesFdr
CrossesEast Fork Salmon River
Location20 Miles from Mouth of R.
RouteFederal Lands Road 70120
StateIdaho
Coordinates44.10543, -114.43853
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation*: *
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating—
Inventory rating—

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span68 ft (20.7 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr over East Fork Salmon River built?

It was built in 1989, making it 36 years old in 2025.

What condition is Fdr over East Fork Salmon 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 September 2023.

How much traffic does Fdr over East Fork Salmon River carry?

About 50 vehicles per day (latest count).

How long is Fdr over East Fork Salmon River?

The structure is 70 ft (21.3 m) long with a longest span of 68 ft (20.7 m) and a deck 16 ft wide.

Who owns Fdr over East Fork Salmon River?

It is owned by the U.S. Forest Service.