US Bridges

Dutch LN over Silvertip Creek 060

Fair

Carbon County, Montana · 1M NE Belfry · Structure no. L05302001+03951

Built
2006
19 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Dutch LN over Silvertip Creek 060 is a steel stringer/multi-beam or girder carrying Dutch LN over Silvertip Creek 060 in Carbon County, Montana. It was built in 2006, so it is 19 years old, younger 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 40 ft (12.3 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesDutch LN
CrossesSilvertip Creek 060
Location1M NE Belfry
RouteCounty Highway 5302
StateMontana
Coordinates45.15999, -108.97752
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating35.1 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length40 ft (12.3 m)
Longest span39 ft (12 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dutch LN over Silvertip Creek 060 built?

It was built in 2006, making it 19 years old in 2025.

What condition is Dutch LN over Silvertip Creek 060 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 Dutch LN over Silvertip Creek 060 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Dutch LN over Silvertip Creek 060?

The structure is 40 ft (12.3 m) long with a longest span of 39 ft (12 m) and a deck 28 ft wide.

Who owns Dutch LN over Silvertip Creek 060?

It is owned by the County Highway Agency.