US Bridges

W. 6th Street over Little Bear Creek

Good

Latah County, Idaho · In Troy · Structure no. 000000000033210

Built
2020
5 years old
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
50
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

W. 6th Street over Little Bear Creek is a prestressed concrete box beam or girders - multiple carrying W. 6th Street over Little Bear Creek in Latah County, Idaho. It was built in 2020, so it is 5 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 50 vehicles a day, roughly 25% of them trucks, projected to reach 75 by 2041. The structure is 58 ft (17.7 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesW. 6th Street
CrossesLittle Bear Creek
LocationIn Troy
RouteCity Street 0
StateIdaho
Coordinates46.73347, -116.76772
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.7 US tons
Inventory rating61.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length58 ft (17.7 m)
Longest span55 ft (16.8 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2041
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W. 6th Street over Little Bear Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is W. 6th Street over Little Bear 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 September 2024.

How much traffic does W. 6th Street over Little Bear Creek carry?

About 50 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is W. 6th Street over Little Bear Creek?

The structure is 58 ft (17.7 m) long with a longest span of 55 ft (16.8 m) and a deck 40 ft wide.

Who owns W. 6th Street over Little Bear Creek?

It is owned by the City or Municipal Highway Agency.