US Bridges

I 94 over Beaver Creek

Fair

Wibaux County, Montana · N Wibaux · Structure no. I00094242+02642

Built
1974
51 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
287 ft
5 main spans
Daily traffic
1,796
2023 count
Owner
State
State Highway Agency

About this bridge

I 94 over Beaver Creek is a prestressed concrete stringer/multi-beam or girder carrying I 94 over Beaver Creek in Wibaux County, Montana. It was built in 1974, so it is 51 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 1,796 vehicles a day, roughly 28% of them trucks, projected to reach 1,921 by 2043. The structure is 287 ft (87.4 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 94
CrossesBeaver Creek
LocationN Wibaux
RouteInterstate 94
CountyWibaux County
StateMontana
Coordinates46.99197, -104.18247
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.1 US tons
Inventory rating55 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length287 ft (87.4 m)
Longest span61 ft (18.6 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,796 (2023)
Projected traffic1,921 by 2043
Trucks28%
Lanes on structure2
Traffic directionOne-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 Beaver Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is I 94 over Beaver 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 Beaver Creek carry?

About 1,796 vehicles per day (2023 count), of which roughly 28% are trucks.

How long is I 94 over Beaver Creek?

The structure is 287 ft (87.4 m) long with a longest span of 61 ft (18.6 m) and a deck 44 ft wide.

Who owns I 94 over Beaver Creek?

It is owned by the State Highway Agency.