US Bridges

Martinsdale RD over S Fk Mussleshell Ovf 040

Fair

Meagher County, Montana · Martinsdale · Structure no. L30127000+01001

Built
2009
16 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
21 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Martinsdale RD over S Fk Mussleshell Ovf 040 is a wood or timber stringer/multi-beam or girder carrying Martinsdale RD over S Fk Mussleshell Ovf 040 in Meagher County, Montana. It was built in 2009, so it is 16 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 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 21 ft (6.4 m) long and 16 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesMartinsdale RD
CrossesS Fk Mussleshell Ovf 040
LocationMartinsdale
RouteCounty Highway 127
CountyMeagher County
StateMontana
Coordinates46.45971, -110.31273
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.2 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span20 ft (6.1 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Martinsdale RD over S Fk Mussleshell Ovf 040 built?

It was built in 2009, making it 16 years old in 2025.

What condition is Martinsdale RD over S Fk Mussleshell Ovf 040 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 April 2023.

How much traffic does Martinsdale RD over S Fk Mussleshell Ovf 040 carry?

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

How long is Martinsdale RD over S Fk Mussleshell Ovf 040?

The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m) and a deck 16 ft wide.

Who owns Martinsdale RD over S Fk Mussleshell Ovf 040?

It is owned by the County Highway Agency.