US Bridges

Stc 5711;MOON Pass over Bullion Creek

FairPosted for load

Shoshone County, Idaho · 8.7 N. 1.9 E. Avery · Structure no. 000000000020415

Built
1937
88 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
34 ft
1 main span
Daily traffic
220
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 5711;MOON Pass over Bullion Creek is a wood or timber stringer/multi-beam or girder carrying Stc 5711;MOON Pass over Bullion Creek in Shoshone County, Idaho. It was built in 1937, so it is 88 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. Its operating status is: posted for load restriction.

It carries about 220 vehicles a day, roughly 5% of them trucks, projected to reach 330 by 2042. The structure is 34 ft (10.4 m) long and 22 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

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CarriesStc 5711;MOON Pass
CrossesBullion Creek
Location8.7 N. 1.9 E. Avery
RouteCounty Highway 5711
CountyShoshone County
StateIdaho
Coordinates47.37719, -115.76436
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23 US tons
Inventory rating15 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 10
Structure length34 ft (10.4 m)
Longest span33 ft (10.1 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2023)
Projected traffic330 by 2042
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 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$408,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Stc 5711;MOON Pass over Bullion Creek built?

It was built in 1937, making it 88 years old in 2025.

What condition is Stc 5711;MOON Pass over Bullion 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 August 2024.

How much traffic does Stc 5711;MOON Pass over Bullion Creek carry?

About 220 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Stc 5711;MOON Pass over Bullion Creek?

The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 22 ft wide.

Who owns Stc 5711;MOON Pass over Bullion Creek?

It is owned by the County Highway Agency.