US Bridges

Sheep Station Road over I 15;SHEEP Station RD Ic

Good

Clark County, Idaho · 5.0 N. Dubois · Structure no. 000000000031616

Built
1990
35 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
278 ft
4 main spans
Daily traffic
30
2023 count
Owner
State
State Highway Agency

About this bridge

Sheep Station Road over I 15;SHEEP Station RD Ic is a prestressed concrete stringer/multi-beam or girder carrying Sheep Station Road over I 15;SHEEP Station RD Ic in Clark County, Idaho. It was built in 1990, so it is 35 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 30 vehicles a day, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 278 ft (84.7 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSheep Station Road
CrossesI 15;SHEEP Station RD Ic
Location5.0 N. Dubois
RouteCounty Highway 0
CountyClark County
StateIdaho
Coordinates44.24714, -112.22867
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.9 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length278 ft (84.7 m)
Longest span102 ft (31.1 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2042
Trucks50%
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 SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sheep Station Road over I 15;SHEEP Station RD Ic built?

It was built in 1990, making it 35 years old in 2025.

What condition is Sheep Station Road over I 15;SHEEP Station RD Ic in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Sheep Station Road over I 15;SHEEP Station RD Ic carry?

About 30 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is Sheep Station Road over I 15;SHEEP Station RD Ic?

The structure is 278 ft (84.7 m) long with a longest span of 102 ft (31.1 m) and a deck 30 ft wide.

Who owns Sheep Station Road over I 15;SHEEP Station RD Ic?

It is owned by the State Highway Agency.