US Bridges

County Road over I 90;SMELTERVILLE Ic

Fair

Shoshone County, Idaho · 0.3 N. 0.1 W.Smelterville · Structure no. 000000000030895

Built
1964
61 years old
Condition
Fair
inspected April 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
176 ft
4 main spans
Daily traffic
3,800
2023 count
Owner
State
State Highway Agency

About this bridge

County Road over I 90;SMELTERVILLE Ic is a prestressed concrete stringer/multi-beam or girder carrying County Road over I 90;SMELTERVILLE Ic in Shoshone 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 3,800 vehicles a day, projected to reach 5,700 by 2042. The structure is 176 ft (53.6 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty Road
CrossesI 90;SMELTERVILLE Ic
Location0.3 N. 0.1 W.Smelterville
RouteCounty Highway 0
CountyShoshone County
StateIdaho
Coordinates47.54642, -116.17531
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length176 ft (53.6 m)
Longest span52 ft (15.8 m)
Deck width33 ft (10 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2023)
Projected traffic5,700 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

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 million (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Road over I 90;SMELTERVILLE Ic built?

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

What condition is County Road over I 90;SMELTERVILLE 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 April 2021.

How much traffic does County Road over I 90;SMELTERVILLE Ic carry?

About 3,800 vehicles per day (2023 count).

How long is County Road over I 90;SMELTERVILLE Ic?

The structure is 176 ft (53.6 m) long with a longest span of 52 ft (15.8 m) and a deck 33 ft wide.

Who owns County Road over I 90;SMELTERVILLE Ic?

It is owned by the State Highway Agency.