US Bridges

No Data Entered over Blackbird Creek

Fair

Lemhi County, Idaho · No Data Entered · Structure no. 041301000001066

Built
1999
26 years old
Condition
Fair
inspected October 2023
Type
Frame
Concrete
Length
32 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

No Data Entered over Blackbird Creek is a concrete frame carrying No Data Entered over Blackbird Creek in Lemhi County, Idaho. It was built in 1999, so it is 26 years old, younger 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 32 ft (9.7 m) long and 18 ft wide.

Location

Open in Google Maps
CarriesNo Data Entered
CrossesBlackbird Creek
LocationNo Data Entered
RouteFederal Lands Road 60116
CountyLemhi County
StateIdaho
Coordinates45.09137, -114.29789
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckOther
Main spans1
Design loadH 20
Structure length32 ft (9.7 m)
Longest span30 ft (9.1 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 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 No Data Entered over Blackbird Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is No Data Entered over Blackbird 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 2023.

How much traffic does No Data Entered over Blackbird Creek carry?

About 50 vehicles per day (latest count).

How long is No Data Entered over Blackbird Creek?

The structure is 32 ft (9.7 m) long with a longest span of 30 ft (9.1 m) and a deck 18 ft wide.

Who owns No Data Entered over Blackbird Creek?

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