US Bridges

NFSR 1049 over Belt Creek

FairPosted for load

Cascade County, Montana · East of JCT US89/NFSR1049 · Structure no. 011507000000043

Built
1909
116 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
99
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 1049 over Belt Creek is a prestressed concrete tee beam carrying NFSR 1049 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 77 ft (23.5 m) long and 17 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

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CarriesNFSR 1049
CrossesBelt Creek
LocationEast of JCT US89/NFSR1049
RouteFederal Lands Road 1049
CountyCascade County
StateMontana
Coordinates47.04322, -110.79155
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation*: *
Deck geometry7: Better than 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 typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length77 ft (23.5 m)
Longest span75 ft (22.9 m)
Deck width17 ft (5.3 m)
Roadway width15 ft (4.6 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 1049 over Belt Creek built?

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

What condition is NFSR 1049 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 July 2024.

How much traffic does NFSR 1049 over Belt Creek carry?

About 99 vehicles per day (latest count).

How long is NFSR 1049 over Belt Creek?

The structure is 77 ft (23.5 m) long with a longest span of 75 ft (22.9 m) and a deck 17 ft wide.

Who owns NFSR 1049 over Belt Creek?

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