US Bridges

US 95 Sbl over Cow Creek

Fair

Nez Perce County, Idaho · 15.2 N Lewiston · Structure no. 000000000018486

Built
2007
18 years old
Condition
Fair
inspected July 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
74 ft
1 main span
Daily traffic
3,050
2023 count
Owner
State
State Highway Agency

About this bridge

US 95 Sbl over Cow Creek is a prestressed concrete stringer/multi-beam or girder carrying US 95 Sbl over Cow Creek in Nez Perce County, Idaho. It was built in 2007, so it is 18 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 3,050 vehicles a day, roughly 16% of them trucks, projected to reach 4,575 by 2042. The structure is 74 ft (22.6 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 95 Sbl
CrossesCow Creek
Location15.2 N Lewiston
RouteU.S. Route 95
StateIdaho
Coordinates46.53699, -116.94835
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating38 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length74 ft (22.6 m)
Longest span74 ft (22.6 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,050 (2023)
Projected traffic4,575 by 2042
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Sbl over Cow Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is US 95 Sbl over Cow 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 Sbl over Cow Creek carry?

About 3,050 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is US 95 Sbl over Cow Creek?

The structure is 74 ft (22.6 m) long with a longest span of 74 ft (22.6 m) and a deck 41 ft wide.

Who owns US 95 Sbl over Cow Creek?

It is owned by the State Highway Agency.