US Bridges

N Devon RD over West Fork Willow CR 005

Fair

Toole County, Montana · Devon-N Devon RD · Structure no. L51001000+01001

Built
1980
45 years old
Condition
Fair
inspected December 2023
Type
Culvert
Steel
Length
36 ft
2 main spans
Daily traffic
29
2023 count
Owner
County
County Highway Agency

About this bridge

N Devon RD over West Fork Willow CR 005 is a steel culvert carrying N Devon RD over West Fork Willow CR 005 in Toole 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 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 29 vehicles a day, roughly 3% of them trucks, projected to reach 31 by 2043. The structure is 36 ft (11 m) long. If it were closed, the detour would be 19.9 mi (32 km).

CarriesN Devon RD
CrossesWest Fork Willow CR 005
LocationDevon-N Devon RD
RouteCounty Highway 51001
StateMontana
Coordinates48.4645, -111.47839
Functional classRural Minor 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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating28 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length36 ft (11 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2023)
Projected traffic31 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 N Devon RD over West Fork Willow CR 005 built?

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

What condition is N Devon RD over West Fork Willow CR 005 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 2023.

How much traffic does N Devon RD over West Fork Willow CR 005 carry?

About 29 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is N Devon RD over West Fork Willow CR 005?

The structure is 36 ft (11 m) long with a longest span of 14 ft (4.3 m).

Who owns N Devon RD over West Fork Willow CR 005?

It is owned by the County Highway Agency.