US Bridges

Cenarrusa Lane over Little Wood River

Fair

Blaine County, Idaho · 0.6 S. 0.5 E. Carey · Structure no. 000000000023705

Built
1940
85 years old, rebuilt 2008
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
35
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cenarrusa Lane over Little Wood River is a steel stringer/multi-beam or girder carrying Cenarrusa Lane over Little Wood River in Blaine County, Idaho. It was built in 1940 and reconstructed in 2008, so it is 85 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 53 by 2039. The structure is 26 ft (7.9 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCenarrusa Lane
CrossesLittle Wood River
Location0.6 S. 0.5 E. Carey
RouteCity Street 0
StateIdaho
Coordinates43.30206, -113.93817
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.9 US tons
Inventory rating89 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span23 ft (7 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2023)
Projected traffic53 by 2039
Trucks10%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$326,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cenarrusa Lane over Little Wood River built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2008.

What condition is Cenarrusa Lane 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 2024.

How much traffic does Cenarrusa Lane over Little Wood River carry?

About 35 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Cenarrusa Lane over Little Wood River?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 20 ft wide.

Who owns Cenarrusa Lane over Little Wood River?

It is owned by the City or Municipal Highway Agency.