US Bridges

I 94 over Cane ST

Fair

Yellowstone County, Montana · 1.9M E Pompeys Pillar · Structure no. I00094025+01202

Built
1976
49 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
2,255
2023 count
Owner
State
State Highway Agency

About this bridge

I 94 over Cane ST is a prestressed concrete stringer/multi-beam or girder carrying I 94 over Cane ST in Yellowstone 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 2,255 vehicles a day, roughly 30% of them trucks, projected to reach 2,367 by 2043. The structure is 77 ft (23.5 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 94
CrossesCane ST
Location1.9M E Pompeys Pillar
RouteInterstate 94
StateMontana
Coordinates45.99281, -107.95298
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.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span75 ft (22.9 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,255 (2023)
Projected traffic2,367 by 2043
Trucks30%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 94 over Cane ST built?

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

What condition is I 94 over Cane ST 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 December 2024.

How much traffic does I 94 over Cane ST carry?

About 2,255 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is I 94 over Cane ST?

The structure is 77 ft (23.5 m) long with a longest span of 75 ft (22.9 m) and a deck 44 ft wide.

Who owns I 94 over Cane ST?

It is owned by the State Highway Agency.