US Bridges

I 94 over Whoopup Creek

Fair

Dawson County, Montana · 6M SW Glendive · Structure no. I00094204+05701

Built
1976
49 years old
Condition
Fair
inspected May 2023
Type
Culvert
Steel
Length
30 ft
2 main spans
Daily traffic
4,221
2023 count
Owner
State
State Highway Agency

About this bridge

I 94 over Whoopup Creek is a steel culvert carrying I 94 over Whoopup Creek in Dawson County, Montana. It was built in 1976, so it is 49 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 4,221 vehicles a day, roughly 26% of them trucks, projected to reach 4,833 by 2043. The structure is 30 ft (9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 94
CrossesWhoopup Creek
Location6M SW Glendive
RouteInterstate 94
CountyDawson County
StateMontana
Coordinates47.00971, -104.83308
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.1 US tons
Inventory rating87 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9 m)
Longest span12 ft (3.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,221 (2023)
Projected traffic4,833 by 2043
Trucks26%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I 94 over Whoopup Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is I 94 over Whoopup Creek 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 2023.

How much traffic does I 94 over Whoopup Creek carry?

About 4,221 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is I 94 over Whoopup Creek?

The structure is 30 ft (9 m) long with a longest span of 12 ft (3.8 m).

Who owns I 94 over Whoopup Creek?

It is owned by the State Highway Agency.