US Bridges

W Reserve RD over Wolf Creek 039

Fair

Sheridan County, Montana · 22M SW Plentywood · Structure no. L46413001+04001

Built
1976
49 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

W Reserve RD over Wolf Creek 039 is a prestressed concrete tee beam carrying W Reserve RD over Wolf Creek 039 in Sheridan County, Montana. It was built in 1976, so it is 49 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 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 50 ft (15.2 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesW Reserve RD
CrossesWolf Creek 039
Location22M SW Plentywood
RouteCounty Highway 46413
StateMontana
Coordinates48.60653, -104.81163
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.9 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 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 closed8.1 mi (13 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 W Reserve RD over Wolf Creek 039 built?

It was built in 1976, making it 49 years old in 2025.

What condition is W Reserve RD over Wolf Creek 039 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 W Reserve RD over Wolf Creek 039 carry?

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

How long is W Reserve RD over Wolf Creek 039?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 24 ft wide.

Who owns W Reserve RD over Wolf Creek 039?

It is owned by the County Highway Agency.