US Bridges

Beaverton RD over Beaver Creek 104

FairPosted for load

Valley County, Montana · 6M SE Saco · Structure no. L53602000+07001

Built
1915
110 years old, rebuilt 1990
Condition
Fair
inspected May 2024
Type
Truss - Thru
Steel
Length
121 ft
1 main span
Daily traffic
68
2023 count
Owner
County
County Highway Agency

About this bridge

Beaverton RD over Beaver Creek 104 is a steel truss - thru carrying Beaverton RD over Beaver Creek 104 in Valley County, Montana. It was built in 1915 and reconstructed in 1990, so it is 110 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. Its operating status is: posted for load restriction.

It carries about 68 vehicles a day, roughly 3% of them trucks, projected to reach 72 by 2043. The structure is 121 ft (36.9 m) long and 16 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

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CarriesBeaverton RD
CrossesBeaver Creek 104
Location6M SE Saco
RouteCounty Highway 53415
CountyValley County
StateMontana
Coordinates48.41865, -107.25777
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating10 US tons
Inventory rating8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadUnknown
Structure length121 ft (36.9 m)
Longest span80 ft (24.4 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68 (2023)
Projected traffic72 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$287,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Beaverton RD over Beaver Creek 104 built?

It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1990.

What condition is Beaverton RD over Beaver Creek 104 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 May 2024.

How much traffic does Beaverton RD over Beaver Creek 104 carry?

About 68 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Beaverton RD over Beaver Creek 104?

The structure is 121 ft (36.9 m) long with a longest span of 80 ft (24.4 m) and a deck 16 ft wide.

Who owns Beaverton RD over Beaver Creek 104?

It is owned by the County Highway Agency.