US Bridges

Whiskey Jack over Boyer Slough;se.Kootenai

FairPosted for load

Bonner County, Idaho · 0.2 S. 1.0 E. Kootenai · Structure no. 000000000030145

Built
1969
56 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
57 ft
3 main spans
Daily traffic
130
2023 count
Owner
County
County Highway Agency

About this bridge

Whiskey Jack over Boyer Slough;se.Kootenai is a wood or timber stringer/multi-beam or girder carrying Whiskey Jack over Boyer Slough;se.Kootenai in Bonner County, Idaho. It was built in 1969, so it is 56 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 130 vehicles a day, roughly 18% of them trucks, projected to reach 195 by 2042. The structure is 57 ft (17.4 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesWhiskey Jack
CrossesBoyer Slough;se.Kootenai
Location0.2 S. 1.0 E. Kootenai
RouteCounty Highway 0
StateIdaho
Coordinates48.30927, -116.49196
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
Deck7 GoodSome minor problems.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating24 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2023)
Projected traffic195 by 2042
Trucks18%
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$602,000 (2018 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Whiskey Jack over Boyer Slough;se.Kootenai built?

It was built in 1969, making it 56 years old in 2025.

What condition is Whiskey Jack over Boyer Slough;se.Kootenai 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 October 2024.

How much traffic does Whiskey Jack over Boyer Slough;se.Kootenai carry?

About 130 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is Whiskey Jack over Boyer Slough;se.Kootenai?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 22 ft wide.

Who owns Whiskey Jack over Boyer Slough;se.Kootenai?

It is owned by the County Highway Agency.