US Bridges

Caribou CK;NF-2684 over Caribou Creek

Fair

Bonner County, Idaho · 3.0 W. 3.0 N. Samuels · Structure no. 000000000030217

Built
1985
40 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Caribou CK;NF-2684 over Caribou Creek is a prestressed concrete stringer/multi-beam or girder carrying Caribou CK;NF-2684 over Caribou Creek in Bonner County, Idaho. It was built in 1985, so it is 40 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 100 vehicles a day, projected to reach 150 by 2039. The structure is 56 ft (17.1 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesCaribou CK;NF-2684
CrossesCaribou Creek
Location3.0 W. 3.0 N. Samuels
RouteCounty Highway 0
CountyBonner County
StateIdaho
Coordinates48.47136, -116.56506
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic150 by 2039
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$541,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Caribou CK;NF-2684 over Caribou Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Caribou CK;NF-2684 over Caribou 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 July 2023.

How much traffic does Caribou CK;NF-2684 over Caribou Creek carry?

About 100 vehicles per day (2023 count).

How long is Caribou CK;NF-2684 over Caribou Creek?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 35 ft wide.

Who owns Caribou CK;NF-2684 over Caribou Creek?

It is owned by the County Highway Agency.