US Bridges

Cataract Creek RD over Cataract Creek 034

Fair

Jefferson County, Montana · 1M N Basin · Structure no. L22015001+03001

Built
1967
58 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
33 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Cataract Creek RD over Cataract Creek 034 is a wood or timber stringer/multi-beam or girder carrying Cataract Creek RD over Cataract Creek 034 in Jefferson County, Montana. It was built in 1967, so it is 58 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 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 33 ft (10.1 m) long and 15 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesCataract Creek RD
CrossesCataract Creek 034
Location1M N Basin
RouteCounty Highway 22015
StateMontana
Coordinates46.28568, -112.24389
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating42.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span31 ft (9.4 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Cataract Creek RD over Cataract Creek 034 built?

It was built in 1967, making it 58 years old in 2025.

What condition is Cataract Creek RD over Cataract Creek 034 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 July 2024.

How much traffic does Cataract Creek RD over Cataract Creek 034 carry?

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

How long is Cataract Creek RD over Cataract Creek 034?

The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.4 m) and a deck 15 ft wide.

Who owns Cataract Creek RD over Cataract Creek 034?

It is owned by the County Highway Agency.