US Bridges

Red Duck Lane over Lapwai Creek

Fair

Nez Perce County, Idaho · 1.5 N. 0.2 W. Lapwai · Structure no. 000000000029875

Built
1963
62 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete
Length
48 ft
1 main span
Daily traffic
110
2023 count
Owner
County
County Highway Agency

About this bridge

Red Duck Lane over Lapwai Creek is a concrete tee beam carrying Red Duck Lane over Lapwai Creek in Nez Perce County, Idaho. It was built in 1963, so it is 62 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 110 vehicles a day, roughly 10% of them trucks, projected to reach 165 by 2039. The structure is 48 ft (14.6 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesRed Duck Lane
CrossesLapwai Creek
Location1.5 N. 0.2 W. Lapwai
RouteCounty Highway 0
CountyNez Perce County
StateIdaho
Coordinates46.42669, -116.80583
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79 US tons
Inventory rating47 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span46 ft (14 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2023)
Projected traffic165 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Red Duck Lane over Lapwai Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Red Duck Lane over Lapwai Creek 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 July 2024.

How much traffic does Red Duck Lane over Lapwai Creek carry?

About 110 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Red Duck Lane over Lapwai Creek?

The structure is 48 ft (14.6 m) long with a longest span of 46 ft (14 m) and a deck 26 ft wide.

Who owns Red Duck Lane over Lapwai Creek?

It is owned by the County Highway Agency.