US Bridges

US 95 over Whitebird Creek

Fair

Idaho County, Idaho · At Whitebird Wcl · Structure no. 000000000018365

Built
1975
50 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
811 ft
3 main spans
Daily traffic
2,800
2023 count
Owner
State
State Highway Agency

About this bridge

US 95 over Whitebird Creek is a steel continuous box beam or girders - single or spread carrying US 95 over Whitebird Creek in Idaho County, Idaho. It was built in 1975, so it is 50 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.

It carries about 2,800 vehicles a day, roughly 22% of them trucks, projected to reach 4,200 by 2042. The structure is 811 ft (247.2 m) long and 40 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesUS 95
CrossesWhitebird Creek
LocationAt Whitebird Wcl
RouteU.S. Route 95
CountyIdaho County
StateIdaho
Coordinates45.75733, -116.30706
Functional classRural Principal Arterial - Other

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length811 ft (247.2 m)
Longest span310 ft (94.5 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2023)
Projected traffic4,200 by 2042
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$9.7 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 95 over Whitebird Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is US 95 over Whitebird 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 February 2024.

How much traffic does US 95 over Whitebird Creek carry?

About 2,800 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is US 95 over Whitebird Creek?

The structure is 811 ft (247.2 m) long with a longest span of 310 ft (94.5 m) and a deck 40 ft wide.

Who owns US 95 over Whitebird Creek?

It is owned by the State Highway Agency.