US Bridges

Stocker Creek Road over Silver Creek

FairPosted for load

Blaine County, Idaho · 0.2 N. 5.0 W. Picabo · Structure no. 000000000023765

Built
1977
48 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
60
2023 count
Owner
County
County Highway Agency

About this bridge

Stocker Creek Road over Silver Creek is a prestressed concrete tee beam carrying Stocker Creek Road over Silver Creek in Blaine County, Idaho. It was built in 1977, so it is 48 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 60 vehicles a day, roughly 20% of them trucks, projected to reach 90 by 2042. The structure is 52 ft (15.8 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesStocker Creek Road
CrossesSilver Creek
Location0.2 N. 5.0 W. Picabo
RouteCounty Highway 0
CountyBlaine County
StateIdaho
Coordinates43.31111, -114.16917
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
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 alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span51 ft (15.5 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2023)
Projected traffic90 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$540,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Stocker Creek Road over Silver Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Stocker Creek Road over Silver 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 Stocker Creek Road over Silver Creek carry?

About 60 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is Stocker Creek Road over Silver Creek?

The structure is 52 ft (15.8 m) long with a longest span of 51 ft (15.5 m) and a deck 18 ft wide.

Who owns Stocker Creek Road over Silver Creek?

It is owned by the County Highway Agency.