US Bridges

Enyart LN over Cottonwood Creek 026

Fair

Park County, Montana · 6M NE Clyde Park · Structure no. L34082002+02001

Built
1970
55 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Enyart LN over Cottonwood Creek 026 is a steel stringer/multi-beam or girder carrying Enyart LN over Cottonwood Creek 026 in Park 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 26 ft (7.9 m) long and 18 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesEnyart LN
CrossesCottonwood Creek 026
Location6M NE Clyde Park
RouteCounty Highway 34082
CountyPark County
StateMontana
Coordinates45.94137, -110.49548
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating45.7 US tons
Inventory rating35.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span23 ft (7.1 m)
Deck width18 ft (5.4 m)
Roadway width15 ft (4.6 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 closed14.9 mi (24 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$38,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Enyart LN over Cottonwood Creek 026 built?

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

What condition is Enyart LN over Cottonwood Creek 026 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 August 2023.

How much traffic does Enyart LN over Cottonwood Creek 026 carry?

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

How long is Enyart LN over Cottonwood Creek 026?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7.1 m) and a deck 18 ft wide.

Who owns Enyart LN over Cottonwood Creek 026?

It is owned by the County Highway Agency.