US Bridges

Farm Access over Frenchtown Main Canal

Fair

Missoula County, Montana · 5 MI NW of Missoula Mt · Structure no. 11FT0003

Built
1970
55 years old
Condition
Fair
inspected March 2024
Type
Other
Steel
Length
40 ft
1 main span
Daily traffic
10
2024 count
Owner
Federal
Bureau of Reclamation

About this bridge

Farm Access over Frenchtown Main Canal is a steel other carrying Farm Access over Frenchtown Main Canal in Missoula County, Montana. It was built in 1970, so it is 55 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 10 vehicles a day, projected to reach 10 by 2044. The structure is 40 ft (12.3 m) long and 20 ft wide. If it were closed, the detour would be 198.8 mi (320 km).

Location

Open in Google Maps
CarriesFarm Access
CrossesFrenchtown Main Canal
Location5 MI NW of Missoula Mt
CountyMissoula County
StateMontana
Coordinates46.91004, -114.14736
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating4.7 US tons
Inventory rating3.7 US tons

Structure

Structure typeOther
MaterialSteel
DeckOther
Main spans1
Design loadUnknown
Structure length40 ft (12.3 m)
Longest span32 ft (9.8 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2024)
Projected traffic10 by 2044
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed198.8 mi (320 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Reclamation
Maintained byUnknown
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 Farm Access over Frenchtown Main Canal built?

It was built in 1970, making it 55 years old in 2025.

What condition is Farm Access over Frenchtown Main Canal 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 March 2024.

How much traffic does Farm Access over Frenchtown Main Canal carry?

About 10 vehicles per day (2024 count).

How long is Farm Access over Frenchtown Main Canal?

The structure is 40 ft (12.3 m) long with a longest span of 32 ft (9.8 m) and a deck 20 ft wide.

Who owns Farm Access over Frenchtown Main Canal?

It is owned by the Bureau of Reclamation and maintained by the Unknown.