US Bridges

Lozeau Crossovr RD over Clark Fork 045

Fair

Mineral County, Montana · Lozeau · Structure no. L31170019+06001

Built
1944
81 years old, rebuilt 1998
Condition
Fair
inspected June 2023
Type
Truss - Thru
Steel
Length
464 ft
2 main spans
Daily traffic
221
2023 count
Owner
County
County Highway Agency

About this bridge

Lozeau Crossovr RD over Clark Fork 045 is a steel truss - thru carrying Lozeau Crossovr RD over Clark Fork 045 in Mineral County, Montana. It was built in 1944 and reconstructed in 1998, so it is 81 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 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 221 vehicles a day, roughly 3% of them trucks, projected to reach 236 by 2043. The structure is 464 ft (141.4 m) long and 16 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

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CarriesLozeau Crossovr RD
CrossesClark Fork 045
LocationLozeau
RouteCounty Highway 31170
CountyMineral County
StateMontana
Coordinates47.11636, -114.78188
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating23.9 US tons
Inventory rating17 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans2 (+5 approach)
Design loadHS 20
Structure length464 ft (141.4 m)
Longest span175 ft (53.3 m)
Deck width16 ft (4.9 m)
Roadway width9 ft (2.7 m)
Vertical clearance over deck14 ft (4.4 m)

Traffic and service

Average daily traffic221 (2023)
Projected traffic236 by 2043
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 Lozeau Crossovr RD over Clark Fork 045 built?

It was built in 1944, making it 81 years old in 2025. It was reconstructed in 1998.

What condition is Lozeau Crossovr RD over Clark Fork 045 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 June 2023.

How much traffic does Lozeau Crossovr RD over Clark Fork 045 carry?

About 221 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Lozeau Crossovr RD over Clark Fork 045?

The structure is 464 ft (141.4 m) long with a longest span of 175 ft (53.3 m) and a deck 16 ft wide.

Who owns Lozeau Crossovr RD over Clark Fork 045?

It is owned by the County Highway Agency.