US Bridges

Canyon Creek RD over Canyon Creek

Fair

Flathead County, Montana · 1st Bridge on Canyon CR · Structure no. 011007000000061

Built
1976
49 years old
Condition
Fair
inspected July 2021
Type
Tee Beam
Prestressed Concrete
Length
76 ft
1 main span
Daily traffic
5
1990 count
Owner
Federal
U.S. Forest Service

About this bridge

Canyon Creek RD over Canyon Creek is a prestressed concrete tee beam carrying Canyon Creek RD over Canyon Creek in Flathead County, Montana. It was built in 1976, so it is 49 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 5 vehicles a day, projected to reach 7 by 2045. The structure is 76 ft (23.2 m) long and 15 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesCanyon Creek RD
CrossesCanyon Creek
Location1st Bridge on Canyon CR
RouteFederal Lands Road 316
StateMontana
Coordinates48.50484, -114.18619
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating36.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadH 20
Structure length76 ft (23.2 m)
Longest span31 ft (9.5 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (1990)
Projected traffic7 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
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 Canyon Creek RD over Canyon Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Canyon Creek RD over Canyon 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 2021.

How much traffic does Canyon Creek RD over Canyon Creek carry?

About 5 vehicles per day (1990 count).

How long is Canyon Creek RD over Canyon Creek?

The structure is 76 ft (23.2 m) long with a longest span of 31 ft (9.5 m) and a deck 15 ft wide.

Who owns Canyon Creek RD over Canyon Creek?

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