US Bridges

Earl Lane over Moyie River

Fair

Boundary County, Idaho · 2.9 S. Addie · Structure no. 000000000030275

Built
1981
44 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Prestressed Concrete
Length
102 ft
1 main span
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Earl Lane over Moyie River is a prestressed concrete tee beam carrying Earl Lane over Moyie River in Boundary County, Idaho. It was built in 1981, so it is 44 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 30 vehicles a day, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 102 ft (31.1 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesEarl Lane
CrossesMoyie River
Location2.9 S. Addie
RouteCounty Highway 0
StateIdaho
Coordinates48.90828, -116.17444
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating29 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span101 ft (30.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2042
Trucks50%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Earl Lane over Moyie River built?

It was built in 1981, making it 44 years old in 2025.

What condition is Earl Lane over Moyie 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 August 2023.

How much traffic does Earl Lane over Moyie River carry?

About 30 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is Earl Lane over Moyie River?

The structure is 102 ft (31.1 m) long with a longest span of 101 ft (30.8 m) and a deck 26 ft wide.

Who owns Earl Lane over Moyie River?

It is owned by the County Highway Agency.