US Bridges

S Bainville RD over Little Muddy Creek 049

Fair

Roosevelt County, Montana · 4M S Bainville · Structure no. L43611001+05001

Built
1995
30 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
42
2023 count
Owner
County
County Highway Agency

About this bridge

S Bainville RD over Little Muddy Creek 049 is a steel stringer/multi-beam or girder carrying S Bainville RD over Little Muddy Creek 049 in Roosevelt County, Montana. It was built in 1995, so it is 30 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.

It carries about 42 vehicles a day, roughly 3% of them trucks, projected to reach 44 by 2043. The structure is 60 ft (18.3 m) long and 24 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesS Bainville RD
CrossesLittle Muddy Creek 049
Location4M S Bainville
RouteCounty Highway 43345
CountyRoosevelt County
StateMontana
Coordinates48.0851, -104.19797
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span59 ft (18 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42 (2023)
Projected traffic44 by 2043
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S Bainville RD over Little Muddy Creek 049 built?

It was built in 1995, making it 30 years old in 2025.

What condition is S Bainville RD over Little Muddy Creek 049 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 November 2023.

How much traffic does S Bainville RD over Little Muddy Creek 049 carry?

About 42 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is S Bainville RD over Little Muddy Creek 049?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 24 ft wide.

Who owns S Bainville RD over Little Muddy Creek 049?

It is owned by the County Highway Agency.