US Bridges

NFSR 834 over Belt Creek

FairPosted for load

Cascade County, Montana · JCT US 89/NFSR 834 · Structure no. 011507000000039

Built
1909
116 years old
Condition
Fair
inspected October 2023
Type
Truss - Thru
Steel
Length
52 ft
1 main span
Daily traffic
99
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 834 over Belt Creek is a steel truss - thru carrying NFSR 834 over Belt Creek in Cascade County, Montana. It was built in 1909, so it is 116 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 99 vehicles a day, projected to reach 148 by 2045. The structure is 52 ft (15.8 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

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CarriesNFSR 834
CrossesBelt Creek
LocationJCT US 89/NFSR 834
RouteFederal Lands Road 834
CountyCascade County
StateMontana
Coordinates46.95421, -110.75533
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation*: *
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating—
Inventory rating—

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length52 ft (15.8 m)
Longest span50 ft (15.2 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (—)
Projected traffic148 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 NFSR 834 over Belt Creek built?

It was built in 1909, making it 116 years old in 2025.

What condition is NFSR 834 over Belt 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 October 2023.

How much traffic does NFSR 834 over Belt Creek carry?

About 99 vehicles per day (latest count).

How long is NFSR 834 over Belt Creek?

The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 16 ft wide.

Who owns NFSR 834 over Belt Creek?

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