US Bridges

Stc 5711;MOON Pass over Loop Creek

Fair

Shoshone County, Idaho · 7.1 N. 3.3 E. Avery · Structure no. 000000000020409

Built
1990
35 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
370
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 5711;MOON Pass over Loop Creek is a steel stringer/multi-beam or girder carrying Stc 5711;MOON Pass over Loop Creek in Shoshone County, Idaho. It was built in 1990, so it is 35 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 370 vehicles a day, roughly 3% of them trucks, projected to reach 555 by 2042. The structure is 60 ft (18.3 m) long and 18 ft wide. If it were closed, the detour would be 39.1 mi (63 km).

Location

Open in Google Maps
CarriesStc 5711;MOON Pass
CrossesLoop Creek
Location7.1 N. 3.3 E. Avery
RouteCounty Highway 5711
CountyShoshone County
StateIdaho
Coordinates47.35297, -115.73622
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 20
Structure length60 ft (18.3 m)
Longest span58 ft (17.7 m)
Deck width18 ft (5.4 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic370 (2023)
Projected traffic555 by 2042
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.1 mi (63 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$624,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 1990, making it 35 years old in 2025.

What condition is Stc 5711;MOON Pass over Loop 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 Loop Creek carry?

About 370 vehicles per day (2023 count), of which roughly 3% are trucks.

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

The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.7 m) and a deck 18 ft wide.

Who owns Stc 5711;MOON Pass over Loop Creek?

It is owned by the County Highway Agency.