US Bridges

US 95 over Calf Creek

Fair

Latah County, Idaho · 13.3 S. Moscow · Structure no. 000000000018491

Built
2006
19 years old
Condition
Fair
inspected July 2022
Type
Culvert
Concrete
Length
26 ft
1 main span
Daily traffic
6,100
2023 count
Owner
State
State Highway Agency

About this bridge

US 95 over Calf Creek is a concrete culvert carrying US 95 over Calf Creek in Latah County, Idaho. It was built in 2006, so it is 19 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 6,100 vehicles a day, roughly 19% of them trucks, projected to reach 9,150 by 2042. The structure is 26 ft (7.9 m) long and 260 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 95
CrossesCalf Creek
Location13.3 S. Moscow
RouteU.S. Route 95
StateIdaho
Coordinates46.55069, -116.94928
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span23 ft (7.1 m)
Deck width260 ft (79.2 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2023)
Projected traffic9,150 by 2042
Trucks19%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 95 over Calf Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is US 95 over Calf 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 2022.

How much traffic does US 95 over Calf Creek carry?

About 6,100 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is US 95 over Calf Creek?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7.1 m) and a deck 260 ft wide.

Who owns US 95 over Calf Creek?

It is owned by the State Highway Agency.