US Bridges

Eagle Nest-Gold Fk over Gold Fork River

Good

Valley County, Idaho · 12 MI West of Warm Lake · Structure no. 040204000001112

Built
1967
58 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
34 ft
1 main span
Daily traffic
15
1994 count
Owner
Federal
U.S. Forest Service

About this bridge

Eagle Nest-Gold Fk over Gold Fork River is a wood or timber stringer/multi-beam or girder carrying Eagle Nest-Gold Fk over Gold Fork River in Valley County, Idaho. It was built in 1967, so it is 58 years old, older 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 15 vehicles a day, projected to reach 22 by 2045. The structure is 34 ft (10.4 m) long and 15 ft wide. If it were closed, the detour would be 20.5 mi (33 km).

CarriesEagle Nest-Gold Fk
CrossesGold Fork River
Location12 MI West of Warm Lake
RouteFederal Lands Road 400
StateIdaho
Coordinates44.67424, -115.89687
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating63.6 US tons
Inventory rating48.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span33 ft (10.1 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (1994)
Projected traffic22 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed20.5 mi (33 km)
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 Eagle Nest-Gold Fk over Gold Fork River built?

It was built in 1967, making it 58 years old in 2025.

What condition is Eagle Nest-Gold Fk over Gold Fork 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 Eagle Nest-Gold Fk over Gold Fork River carry?

About 15 vehicles per day (1994 count).

How long is Eagle Nest-Gold Fk over Gold Fork River?

The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 15 ft wide.

Who owns Eagle Nest-Gold Fk over Gold Fork River?

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