US Bridges

US 95 over US 12;US 12-95 Ic

Fair

Nez Perce County, Idaho · 6.1 E. Lewiston · Structure no. 000000000018470

Built
1964
61 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
218 ft
3 main spans
Daily traffic
11,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 95 over US 12;US 12-95 Ic is a prestressed concrete stringer/multi-beam or girder carrying US 95 over US 12;US 12-95 Ic in Nez Perce County, Idaho. It was built in 1964, so it is 61 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 11,000 vehicles a day, roughly 17% of them trucks, projected to reach 16,500 by 2042. The structure is 218 ft (66.4 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 95
CrossesUS 12;US 12-95 Ic
Location6.1 E. Lewiston
RouteU.S. Route 95
CountyNez Perce County
StateIdaho
Coordinates46.446, -116.84953
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length218 ft (66.4 m)
Longest span83 ft (25.3 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,000 (2023)
Projected traffic16,500 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.1 million (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 95 over US 12;US 12-95 Ic built?

It was built in 1964, making it 61 years old in 2025.

What condition is US 95 over US 12;US 12-95 Ic 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 2023.

How much traffic does US 95 over US 12;US 12-95 Ic carry?

About 11,000 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US 95 over US 12;US 12-95 Ic?

The structure is 218 ft (66.4 m) long with a longest span of 83 ft (25.3 m) and a deck 44 ft wide.

Who owns US 95 over US 12;US 12-95 Ic?

It is owned by the State Highway Agency.