US Bridges

Marsh RD over Cains Coulee

Fair

Dawson County, Montana · S Glendive · Structure no. S00335000+06001

Built
1964
61 years old, rebuilt 2009
Condition
Fair
inspected December 2024
Type
Culvert
Steel
Length
35 ft
2 main spans
Daily traffic
437
2023 count
Owner
State
State Highway Agency

About this bridge

Marsh RD over Cains Coulee is a steel culvert carrying Marsh RD over Cains Coulee in Dawson County, Montana. It was built in 1964 and reconstructed in 2009, so it is 61 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 437 vehicles a day, roughly 1% of them trucks, projected to reach 459 by 2043. The structure is 35 ft (10.8 m) long. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesMarsh RD
CrossesCains Coulee
LocationS Glendive
RouteState Highway 335
CountyDawson County
StateMontana
Coordinates47.09728, -104.72
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHL 93
Structure length35 ft (10.8 m)
Longest span16 ft (4.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic437 (2023)
Projected traffic459 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Marsh RD over Cains Coulee built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2009.

What condition is Marsh RD over Cains Coulee 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 December 2024.

How much traffic does Marsh RD over Cains Coulee carry?

About 437 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Marsh RD over Cains Coulee?

The structure is 35 ft (10.8 m) long with a longest span of 16 ft (4.8 m).

Who owns Marsh RD over Cains Coulee?

It is owned by the State Highway Agency.