US Bridges

Little Bear Ridge over Little Bear Creek

Fair

Latah County, Idaho · 0.1 N. 2.0 E. Troy · Structure no. 000000000029765

Built
1965
60 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
20 ft
1 main span
Daily traffic
360
2023 count
Owner
Local
Other Local Agency

About this bridge

Little Bear Ridge over Little Bear Creek is a steel stringer/multi-beam or girder carrying Little Bear Ridge over Little Bear Creek in Latah County, Idaho. It was built in 1965, so it is 60 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.

It carries about 360 vehicles a day, roughly 3% of them trucks, projected to reach 540 by 2042. The structure is 20 ft (6.1 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLittle Bear Ridge
CrossesLittle Bear Creek
Location0.1 N. 2.0 E. Troy
RouteCounty Highway 0
StateIdaho
Coordinates46.73878, -116.72886
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 20
Structure length20 ft (6.1 m)
Longest span19 ft (5.8 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic360 (2023)
Projected traffic540 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local 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 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Little Bear Ridge over Little Bear Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Little Bear Ridge over Little Bear 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 May 2023.

How much traffic does Little Bear Ridge over Little Bear Creek carry?

About 360 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Little Bear Ridge over Little Bear Creek?

The structure is 20 ft (6.1 m) long with a longest span of 19 ft (5.8 m) and a deck 24 ft wide.

Who owns Little Bear Ridge over Little Bear Creek?

It is owned by the Other Local Agency.