US Bridges

Wilson RD over Sarpy Creek 012

FairPosted for load

Treasure County, Montana · 22M S Hysham · Structure no. L52120000+02001

Built
1970
55 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
—
2023 count
Owner
County
County Highway Agency

About this bridge

Wilson RD over Sarpy Creek 012 is a steel stringer/multi-beam or girder carrying Wilson RD over Sarpy Creek 012 in Treasure County, Montana. It was built in 1970, so it is 55 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.

No traffic count is recorded. The structure is 26 ft (7.9 m) long and 20 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesWilson RD
CrossesSarpy Creek 012
Location22M S Hysham
RouteCounty Highway 52010
CountyTreasure County
StateMontana
Coordinates45.98582, -107.13092
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 protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating13 US tons
Inventory rating10 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span25 ft (7.5 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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$113,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wilson RD over Sarpy Creek 012 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Wilson RD over Sarpy Creek 012 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 February 2024.

How much traffic does Wilson RD over Sarpy Creek 012 carry?

No traffic count is recorded for this structure.

How long is Wilson RD over Sarpy Creek 012?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.5 m) and a deck 20 ft wide.

Who owns Wilson RD over Sarpy Creek 012?

It is owned by the County Highway Agency.