US Bridges

E.Fk.-Fly Ck. Road over East Fork Swanholm

Fair

Elmore County, Idaho · 12 MI Wnw of Atlanta Id · Structure no. 040203000001045

Built
1976
49 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
24 ft
1 main span
Daily traffic
5
1992 count
Owner
Federal
U.S. Forest Service

About this bridge

E.Fk.-Fly Ck. Road over East Fork Swanholm is a wood or timber stringer/multi-beam or girder carrying E.Fk.-Fly Ck. Road over East Fork Swanholm in Elmore County, Idaho. It was built in 1976, so it is 49 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 5 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 5 vehicles a day, projected to reach 7 by 2045. The structure is 24 ft (7.3 m) long and 15 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesE.Fk.-Fly Ck. Road
CrossesEast Fork Swanholm
Location12 MI Wnw of Atlanta Id
RouteFederal Lands Road 227
StateIdaho
Coordinates43.84632, -115.34036
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (1992)
Projected traffic7 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 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 E.Fk.-Fly Ck. Road over East Fork Swanholm built?

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

What condition is E.Fk.-Fly Ck. Road over East Fork Swanholm 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 September 2024.

How much traffic does E.Fk.-Fly Ck. Road over East Fork Swanholm carry?

About 5 vehicles per day (1992 count).

How long is E.Fk.-Fly Ck. Road over East Fork Swanholm?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 15 ft wide.

Who owns E.Fk.-Fly Ck. Road over East Fork Swanholm?

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