US Bridges

Shiplett Road over I 90;SHIPLETT Road Gs

Fair

Shoshone County, Idaho · 6.2 W. Kellogg · Structure no. 000000000030875

Built
1967
58 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
215 ft
4 main spans
Daily traffic
250
2023 count
Owner
State
State Highway Agency

About this bridge

Shiplett Road over I 90;SHIPLETT Road Gs is a prestressed concrete stringer/multi-beam or girder carrying Shiplett Road over I 90;SHIPLETT Road Gs in Shoshone County, Idaho. It was built in 1967, so it is 58 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 250 vehicles a day, roughly 16% of them trucks, projected to reach 375 by 2042. The structure is 215 ft (65.5 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesShiplett Road
CrossesI 90;SHIPLETT Road Gs
Location6.2 W. Kellogg
RouteCounty Highway 0
CountyShoshone County
StateIdaho
Coordinates47.54542, -116.25247
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
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 rating73 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length215 ft (65.5 m)
Longest span57 ft (17.4 m)
Deck width31 ft (9.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic375 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 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$2.2 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Shiplett Road over I 90;SHIPLETT Road Gs built?

It was built in 1967, making it 58 years old in 2025.

What condition is Shiplett Road over I 90;SHIPLETT Road Gs 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 May 2024.

How much traffic does Shiplett Road over I 90;SHIPLETT Road Gs carry?

About 250 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Shiplett Road over I 90;SHIPLETT Road Gs?

The structure is 215 ft (65.5 m) long with a longest span of 57 ft (17.4 m) and a deck 31 ft wide.

Who owns Shiplett Road over I 90;SHIPLETT Road Gs?

It is owned by the State Highway Agency.