US Bridges

W Reserve RD over Otter Creek 038

Fair

Sheridan County, Montana · 14M S Plentywood · Structure no. L46402003+09001

Built
1970
55 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
42
2023 count
Owner
County
County Highway Agency

About this bridge

W Reserve RD over Otter Creek 038 is a prestressed concrete tee beam carrying W Reserve RD over Otter Creek 038 in Sheridan 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.

It carries about 42 vehicles a day, projected to reach 44 by 2043. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesW Reserve RD
CrossesOtter Creek 038
Location14M S Plentywood
RouteCounty Highway 46402
StateMontana
Coordinates48.60654, -104.54716
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 inspectionFebruary 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42 (2023)
Projected traffic44 by 2043
Trucks0%
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 Otter Creek 038 built?

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

What condition is W Reserve RD over Otter Creek 038 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 Otter Creek 038 carry?

About 42 vehicles per day (2023 count).

How long is W Reserve RD over Otter Creek 038?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 24 ft wide.

Who owns W Reserve RD over Otter Creek 038?

It is owned by the County Highway Agency.