US Bridges

US 93 over Little Wood River

Fair

Blaine County, Idaho · In Carey · Structure no. 000000000013190

Built
1977
48 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
2,900
2023 count
Owner
State
State Highway Agency

About this bridge

US 93 over Little Wood River is a prestressed concrete box beam or girders - multiple carrying US 93 over Little Wood River in Blaine County, Idaho. It was built in 1977, so it is 48 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 5 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 2,900 vehicles a day, roughly 12% of them trucks, projected to reach 4,350 by 2042. The structure is 50 ft (15.2 m) long and 60 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 93
CrossesLittle Wood River
LocationIn Carey
RouteU.S. Route 93
StateIdaho
Coordinates43.30631, -113.94583
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating35.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width60 ft (18.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2023)
Projected traffic4,350 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 93 over Little Wood River built?

It was built in 1977, making it 48 years old in 2025.

What condition is US 93 over Little Wood River 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 US 93 over Little Wood River carry?

About 2,900 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 93 over Little Wood River?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 60 ft wide.

Who owns US 93 over Little Wood River?

It is owned by the State Highway Agency.