US Bridges

Snake Creek RD over Snake Creek 046

FairPosted for load

Valley County, Montana · 24M N Hinsdale · Structure no. L53031002+05001

Built
1986
39 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
76 ft
2 main spans
Daily traffic
14
2023 count
Owner
County
County Highway Agency

About this bridge

Snake Creek RD over Snake Creek 046 is a steel stringer/multi-beam or girder carrying Snake Creek RD over Snake Creek 046 in Valley County, Montana. It was built in 1986, so it is 39 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. Its operating status is: posted for load restriction.

It carries about 14 vehicles a day, roughly 3% of them trucks, projected to reach 15 by 2043. The structure is 76 ft (23.2 m) long and 24 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesSnake Creek RD
CrossesSnake Creek 046
Location24M N Hinsdale
RouteCounty Highway 53201
CountyValley County
StateMontana
Coordinates48.72855, -107.08479
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating32.2 US tons
Inventory rating19.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans2
Design loadUnknown
Structure length76 ft (23.2 m)
Longest span52 ft (16 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14 (2023)
Projected traffic15 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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$127,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Snake Creek RD over Snake Creek 046 built?

It was built in 1986, making it 39 years old in 2025.

What condition is Snake Creek RD over Snake Creek 046 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 Snake Creek RD over Snake Creek 046 carry?

About 14 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Snake Creek RD over Snake Creek 046?

The structure is 76 ft (23.2 m) long with a longest span of 52 ft (16 m) and a deck 24 ft wide.

Who owns Snake Creek RD over Snake Creek 046?

It is owned by the County Highway Agency.