US Bridges

Yellowjacket Road over Yellowjacket Creek

Fair

Lemhi County, Idaho · No Data Entered · Structure no. 041301000001051

Built
1956
69 years old, rebuilt 1999
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
31 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Yellowjacket Road over Yellowjacket Creek is a wood or timber stringer/multi-beam or girder carrying Yellowjacket Road over Yellowjacket Creek in Lemhi County, Idaho. It was built in 1956 and reconstructed in 1999, so it is 69 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 31 ft (9.4 m) long and 15 ft wide.

Location

Open in Google Maps
CarriesYellowjacket Road
CrossesYellowjacket Creek
LocationNo Data Entered
RouteFederal Lands Road 60112
CountyLemhi County
StateIdaho
Coordinates44.99694, -114.48055
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width15 ft (4.5 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure2
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 Yellowjacket Road over Yellowjacket Creek built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1999.

What condition is Yellowjacket Road over Yellowjacket Creek 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 October 2024.

How much traffic does Yellowjacket Road over Yellowjacket Creek carry?

About 50 vehicles per day (latest count).

How long is Yellowjacket Road over Yellowjacket Creek?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 15 ft wide.

Who owns Yellowjacket Road over Yellowjacket Creek?

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