US Bridges

Stc 1879;LONG Vly over Willow Creek

Fair

Bingham County, Idaho · 3.8 S. 22.0 E. Firth · Structure no. 000000000019336

Built
1999
26 years old
Condition
Fair
inspected October 2023
Type
Frame
Concrete
Length
34 ft
1 main span
Daily traffic
90
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 1879;LONG Vly over Willow Creek is a concrete frame carrying Stc 1879;LONG Vly over Willow Creek in Bingham 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 6 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 90 vehicles a day, roughly 13% of them trucks, projected to reach 135 by 2042. The structure is 34 ft (10.4 m) long and 40 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesStc 1879;LONG Vly
CrossesWillow Creek
Location3.8 S. 22.0 E. Firth
RouteCounty Highway 1879
CountyBingham County
StateIdaho
Coordinates43.24915, -111.74993
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span33 ft (10.1 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2023)
Projected traffic135 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stc 1879;LONG Vly over Willow Creek built?

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

What condition is Stc 1879;LONG Vly over Willow 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 Stc 1879;LONG Vly over Willow Creek carry?

About 90 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Stc 1879;LONG Vly over Willow Creek?

The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 40 ft wide.

Who owns Stc 1879;LONG Vly over Willow Creek?

It is owned by the County Highway Agency.