US Bridges

Yukon Road over Mission Creek;kellogg Br

FairPosted for load

Boundary County, Idaho · 1.7 N. 2.5 E. Copeland · Structure no. 000000000030295

Built
1978
47 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
36 ft
1 main span
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Yukon Road over Mission Creek;kellogg Br is a wood or timber stringer/multi-beam or girder carrying Yukon Road over Mission Creek;kellogg Br in Boundary County, Idaho. It was built in 1978, so it is 47 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 6 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 30 vehicles a day, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 36 ft (11 m) long and 16 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesYukon Road
CrossesMission Creek;kellogg Br
Location1.7 N. 2.5 E. Copeland
RouteCounty Highway 0
StateIdaho
Coordinates48.9305, -116.33672
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating25 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2042
Trucks50%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Yukon Road over Mission Creek;kellogg Br built?

It was built in 1978, making it 47 years old in 2025.

What condition is Yukon Road over Mission Creek;kellogg Br 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 Yukon Road over Mission Creek;kellogg Br carry?

About 30 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is Yukon Road over Mission Creek;kellogg Br?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 16 ft wide.

Who owns Yukon Road over Mission Creek;kellogg Br?

It is owned by the County Highway Agency.