US Bridges

US 2 over Moyie R.Gorge;moyie Br.

Fair

Boundary County, Idaho · In Moyie Springs · Structure no. 000000000010035

Built
1965
60 years old
Condition
Fair
inspected July 2023
Type
Truss - Deck
Steel Continuous
Length
1,223 ft
3 main spans
Daily traffic
2,600
2023 count
Owner
State
State Highway Agency

About this bridge

US 2 over Moyie R.Gorge;moyie Br. is a steel continuous truss - deck carrying US 2 over Moyie R.Gorge;moyie Br. in Boundary County, Idaho. It was built in 1965, so it is 60 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 2,600 vehicles a day, roughly 16% of them trucks, projected to reach 3,900 by 2042. The structure is 1,223 ft (372.8 m) long and 34 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

Open in Google Maps
CarriesUS 2
CrossesMoyie R.Gorge;moyie Br.
LocationIn Moyie Springs
RouteU.S. Route 2
CountyBoundary County
StateIdaho
Coordinates48.72983, -116.17992
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating38 US tons

Structure

Structure typeTruss - Deck
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+3 approach)
Design loadHS 20
Structure length1,223 ft (372.8 m)
Longest span378 ft (115.2 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2023)
Projected traffic3,900 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.3 million (2017 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US 2 over Moyie R.Gorge;moyie Br. built?

It was built in 1965, making it 60 years old in 2025.

What condition is US 2 over Moyie R.Gorge;moyie Br. 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 2023.

How much traffic does US 2 over Moyie R.Gorge;moyie Br. carry?

About 2,600 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is US 2 over Moyie R.Gorge;moyie Br.?

The structure is 1,223 ft (372.8 m) long with a longest span of 378 ft (115.2 m) and a deck 34 ft wide.

Who owns US 2 over Moyie R.Gorge;moyie Br.?

It is owned by the State Highway Agency.