US Bridges

Hinsdale N RD over Snake Creek 042

Fair

Valley County, Montana · 27M N Hinsdale · Structure no. L53001004+08001

Built
1950
75 years old, rebuilt 2024
Condition
Fair
inspected October 2024
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

Hinsdale N RD over Snake Creek 042 is a steel stringer/multi-beam or girder carrying Hinsdale N RD over Snake Creek 042 in Valley County, Montana. It was built in 1950 and reconstructed in 2024, so it is 75 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.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 40 ft (12.2 m) long and 20 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesHinsdale N RD
CrossesSnake Creek 042
Location27M N Hinsdale
RouteCounty Highway 53218
CountyValley County
StateMontana
Coordinates48.77109, -107.09864
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating44 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span35 ft (10.7 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.8 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 closed11.8 mi (19 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$71,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hinsdale N RD over Snake Creek 042 built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2024.

What condition is Hinsdale N RD over Snake Creek 042 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 2024.

How much traffic does Hinsdale N RD over Snake Creek 042 carry?

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

How long is Hinsdale N RD over Snake Creek 042?

The structure is 40 ft (12.2 m) long with a longest span of 35 ft (10.7 m) and a deck 20 ft wide.

Who owns Hinsdale N RD over Snake Creek 042?

It is owned by the County Highway Agency.