US Bridges

Cabin Creek Loop over Cabin Creek 057

Poor

Fallon County, Montana · 22M N Plevna · Structure no. L13003019+09001

Built
1980
45 years old
Condition
Poor
inspected September 2023
Type
Culvert
Steel
Length
85 ft
3 main spans
Daily traffic
32
2023 count
Owner
County
County Highway Agency

About this bridge

Cabin Creek Loop over Cabin Creek 057 is a steel culvert carrying Cabin Creek Loop over Cabin Creek 057 in Fallon County, Montana. It was built in 1980, so it is 45 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 32 vehicles a day, roughly 3% of them trucks, projected to reach 34 by 2043. The structure is 85 ft (25.9 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCabin Creek Loop
CrossesCabin Creek 057
Location22M N Plevna
RouteCounty Highway 13003
StateMontana
Coordinates46.66402, -104.50425
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32 (2023)
Projected traffic34 by 2043
Trucks3%
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

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 Cabin Creek Loop over Cabin Creek 057 built?

It was built in 1980, making it 45 years old in 2025.

What condition is Cabin Creek Loop over Cabin Creek 057 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.

How much traffic does Cabin Creek Loop over Cabin Creek 057 carry?

About 32 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Cabin Creek Loop over Cabin Creek 057?

The structure is 85 ft (25.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Cabin Creek Loop over Cabin Creek 057?

It is owned by the County Highway Agency.