US Bridges

Arkoosh Road over Little Wood River

Good

Lincoln County, Idaho · 1.3 N 8.4 W. Shoshone · Structure no. 000000000025001

Built
2023
2 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
30
2023 count
Owner
Local
Other Local Agency

About this bridge

Arkoosh Road over Little Wood River is a prestressed concrete box beam or girders - multiple carrying Arkoosh Road over Little Wood River in Lincoln County, Idaho. It was built in 2023, so it is 2 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 33% of them trucks, projected to reach 45 by 2041. The structure is 48 ft (14.6 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesArkoosh Road
CrossesLittle Wood River
Location1.3 N 8.4 W. Shoshone
RouteCounty Highway 0
StateIdaho
Coordinates42.95769, -114.57472
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.9 US tons
Inventory rating60 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length48 ft (14.6 m)
Longest span45 ft (13.7 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2041
Trucks33%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local 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 Arkoosh Road over Little Wood River built?

It was built in 2023, making it 2 years old in 2025.

What condition is Arkoosh Road over Little Wood River 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 March 2023.

How much traffic does Arkoosh Road over Little Wood River carry?

About 30 vehicles per day (2023 count), of which roughly 33% are trucks.

How long is Arkoosh Road over Little Wood River?

The structure is 48 ft (14.6 m) long with a longest span of 45 ft (13.7 m) and a deck 28 ft wide.

Who owns Arkoosh Road over Little Wood River?

It is owned by the Other Local Agency.