US Bridges

Farren Hill Road over Middle Fork Beaver CR

Good

Fergus County, Montana · 6.1M S Glengarry · Structure no. 000000202108044

Built
2021
4 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Farren Hill Road over Middle Fork Beaver CR is a steel stringer/multi-beam or girder carrying Farren Hill Road over Middle Fork Beaver CR in Fergus County, Montana. It was built in 2021, so it is 4 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 40 ft (12.2 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFarren Hill Road
CrossesMiddle Fork Beaver CR
Location6.1M S Glengarry
RouteCounty Highway 14321
StateMontana
Coordinates46.9396, -109.5458
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43 US tons
Inventory rating34 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Farren Hill Road over Middle Fork Beaver CR built?

It was built in 2021, making it 4 years old in 2025.

What condition is Farren Hill Road over Middle Fork Beaver CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Farren Hill Road over Middle Fork Beaver CR carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Farren Hill Road over Middle Fork Beaver CR?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 25 ft wide.

Who owns Farren Hill Road over Middle Fork Beaver CR?

It is owned by the County Highway Agency.