US Bridges

Stibnite Road over Salt Creek

Good

Valley County, Idaho · 1.4 S. 6.7 E. Yellow Pine · Structure no. 000000000033913

Built
2010
15 years old
Condition
Good
inspected August 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Stibnite Road over Salt Creek is a prestressed concrete box beam or girders - multiple carrying Stibnite Road over Salt Creek in Valley County, Idaho. It was built in 2010, so it is 15 years old, younger 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 30 vehicles a day, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 25 ft (7.6 m) long and 17 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesStibnite Road
CrossesSalt Creek
Location1.4 S. 6.7 E. Yellow Pine
RouteCounty Highway 0
StateIdaho
Coordinates44.94978, -115.35219
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width17 ft (5.3 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2042
Trucks50%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$312,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Stibnite Road over Salt Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is Stibnite Road over Salt Creek 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 August 2021.

How much traffic does Stibnite Road over Salt Creek carry?

About 30 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is Stibnite Road over Salt Creek?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 17 ft wide.

Who owns Stibnite Road over Salt Creek?

It is owned by the County Highway Agency.