US Bridges

Camas Road over North Fork Flathead Rive

Fair

Flathead County, Montana · 2 Miles North of U.S. Rou · Structure no. 1430006P0000000

Built
1964
61 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
403 ft
4 main spans
Daily traffic
460
2023 count
Owner
Federal
National Park Service

About this bridge

Camas Road over North Fork Flathead Rive is a prestressed concrete continuous stringer/multi-beam or girder carrying Camas Road over North Fork Flathead Rive in Flathead County, Montana. It was built in 1964, so it is 61 years old, older than the Montana average of 47 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 460 vehicles a day, roughly 3% of them trucks, projected to reach 506 by 2043. The structure is 403 ft (122.7 m) long and 30 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesCamas Road
CrossesNorth Fork Flathead Rive
Location2 Miles North of U.S. Rou
RouteFederal Lands Road 15401
StateMontana
Coordinates48.62092, -114.13775
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
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 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 rating39 US tons
Inventory rating23 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length403 ft (122.7 m)
Longest span100 ft (30.5 m)
Deck width30 ft (9.1 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic460 (2023)
Projected traffic506 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$387,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Camas Road over North Fork Flathead Rive built?

It was built in 1964, making it 61 years old in 2025.

What condition is Camas Road over North Fork Flathead Rive 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 Camas Road over North Fork Flathead Rive carry?

About 460 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Camas Road over North Fork Flathead Rive?

The structure is 403 ft (122.7 m) long with a longest span of 100 ft (30.5 m) and a deck 30 ft wide.

Who owns Camas Road over North Fork Flathead Rive?

It is owned by the National Park Service.