US Bridges

Ovando Helmville R over N Fk Blackfoot River 005

Fair

Powell County, Montana · 13M N Helmville · Structure no. L39001004+09001

Built
2000
25 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
143 ft
2 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Ovando Helmville R over N Fk Blackfoot River 005 is a prestressed concrete stringer/multi-beam or girder carrying Ovando Helmville R over N Fk Blackfoot River 005 in Powell County, Montana. It was built in 2000, so it is 25 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 50 vehicles a day, projected to reach 53 by 2043. The structure is 143 ft (43.5 m) long and 26 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesOvando Helmville R
CrossesN Fk Blackfoot River 005
Location13M N Helmville
RouteCounty Highway 39104
StateMontana
Coordinates46.97965, -113.09223
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating53 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length143 ft (43.5 m)
Longest span72 ft (21.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic53 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Ovando Helmville R over N Fk Blackfoot River 005 built?

It was built in 2000, making it 25 years old in 2025.

What condition is Ovando Helmville R over N Fk Blackfoot River 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 October 2023.

How much traffic does Ovando Helmville R over N Fk Blackfoot River 005 carry?

About 50 vehicles per day (2023 count).

How long is Ovando Helmville R over N Fk Blackfoot River 005?

The structure is 143 ft (43.5 m) long with a longest span of 72 ft (21.8 m) and a deck 26 ft wide.

Who owns Ovando Helmville R over N Fk Blackfoot River 005?

It is owned by the County Highway Agency.