US Bridges

Forest Road over S.Fk Flathead River

Good

Flathead County, Montana · By Spotted Bear Ranger ST · Structure no. 011004000000110

Built
1973
52 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
427 ft
3 main spans
Daily traffic
100
1992 count
Owner
Federal
U.S. Forest Service

About this bridge

Forest Road over S.Fk Flathead River is a steel stringer/multi-beam or girder carrying Forest Road over S.Fk Flathead River in Flathead County, Montana. It was built in 1973, so it is 52 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 5% of them trucks, projected to reach 150 by 2045. The structure is 427 ft (130.1 m) long and 37 ft wide.

CarriesForest Road
CrossesS.Fk Flathead River
LocationBy Spotted Bear Ranger ST
RouteFederal Lands Road 895
StateMontana
Coordinates47.94471, -113.55312
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length427 ft (130.1 m)
Longest span153 ft (46.6 m)
Deck width37 ft (11.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1992)
Projected traffic150 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest Road over S.Fk Flathead River built?

It was built in 1973, making it 52 years old in 2025.

What condition is Forest Road over S.Fk Flathead River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Forest Road over S.Fk Flathead River carry?

About 100 vehicles per day (1992 count), of which roughly 5% are trucks.

How long is Forest Road over S.Fk Flathead River?

The structure is 427 ft (130.1 m) long with a longest span of 153 ft (46.6 m) and a deck 37 ft wide.

Who owns Forest Road over S.Fk Flathead River?

It is owned by the U.S. Forest Service.