US Bridges

Little Wood Res RD over Little Wood River

Fair

Blaine County, Idaho · 7.3 N. 3.4 W. Carey · Structure no. 000000000023776

Built
1991
34 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
90
2023 count
Owner
County
County Highway Agency

About this bridge

Little Wood Res RD over Little Wood River is a prestressed concrete stringer/multi-beam or girder carrying Little Wood Res RD over Little Wood River in Blaine County, Idaho. It was built in 1991, so it is 34 years old, younger 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 90 vehicles a day, roughly 13% of them trucks, projected to reach 135 by 2042. The structure is 54 ft (16.5 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLittle Wood Res RD
CrossesLittle Wood River
Location7.3 N. 3.4 W. Carey
RouteCounty Highway 0
StateIdaho
Coordinates43.4195, -114.01181
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span53 ft (16.2 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2023)
Projected traffic135 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Little Wood Res RD over Little Wood River built?

It was built in 1991, making it 34 years old in 2025.

What condition is Little Wood Res RD 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 September 2023.

How much traffic does Little Wood Res RD over Little Wood River carry?

About 90 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Little Wood Res RD over Little Wood River?

The structure is 54 ft (16.5 m) long with a longest span of 53 ft (16.2 m) and a deck 29 ft wide.

Who owns Little Wood Res RD over Little Wood River?

It is owned by the County Highway Agency.